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Je ne connais pas celui qui me les a pris, mais je sais qu'il demeure ici. 5. Avez-vous demandé vos livres ? 6. Je les ai demandés à mon cousin. 7. Vous les a-t-il rendus ? 8. Il me les a payés. 9. Vous a-t-on volé beaucoup de fruit cette année? 10. On m'a volé des légumes, mais on ne m'a point volé de fruit. 11. Avez-vous payé votre chapeau au paysan? 12. Je ne le lui ai pas payé, je l'ai payé au chapelier. 13. À qui avez-vous demandé des renseignements? 14. J'en ai demandé au voyageur. 15. Savez-vous qui vient de frapper à la porte? 16. C'est M. L., qui vous demande. 17. Qui avez-vous demandé? 19. Votre frère a-t-il payé toutes ses dettes ? 20. Il ne les a pas encore payées, parce qu'il n'a pas reçu ses revenus. 21. Lui avez-vous payé ce que vous lui avez acheté ? 22. Je le lui ai payé. 23. Ne leur avez-vous pas payé votre loyer? 24. Je le leur ai payé. 25. Ils nous ont payé notre maison.

18. J'ai demandé votre frère.

EXERCISE 94.

1. Have you paid your landlord ? 2. I have paid him my rent. 3. Have you paid him for the windows which you have broken ? 4. I have paid him for them. 5. Has the hatter paid for all his hats? 6. He has not paid for them, he has bought them on credit (à crédit). 7. Do you pay what you Owe every day? 8. I pay my butcher every week. 9. Have you paid him for his meat? 10. I have paid him for it. 11. For whom did you inquire this morning? 12. I inquired for your brother. 13. Why did you not inquire for my father? 14. I know that your father is in England. 15. Has the hatter been paid for his hats? 16. He has been paid for them. 17. Has your money been taken from you? 18. My hat has been stolen from me. 19. Have you asked your brother for your money? 20. I have asked him for it, but he cannot return it to me. 21. Has he no money? 22. He has just paid all his debts, and he has no money left (de reste). 23. Have you asked your father for money? 24. I have not asked him for any, I know that he has none. 25. From what bookseller have you bought your books? 26. I bought them from your bookseller. 27. Are you wrong to pay your debts? 28. I am right to pay them. 29. Who is inquiring for me? 30. The physician is inquiring for you. 31. Who knocks? 32. Your shoemaker

knocks.

KEY TO EXERCISES IN LESSONS IN FRENCH.

For the use of those who are studying our Lessons in French, we now give the first portion of a Key to the exercises contained in those lessons. We have deferred its commence

ment until the present time designedly, that we might not subject our readers to the temptation of consulting the Key until after they had written the Exercises to which it relates, and made such progress as will enable them to detect and amend any errors they may have made when beginning our course of lessons. The only way to acquire a thorough knowledge of a living language is to practise one's self in the use of it; and the best exercises will be of no service unless they are written without any other assistance than is supplied by general grammatical information. When, however, the selfteacher has thoroughly studied both lessons and exercises, it is useful for him to be able to turn to a key, such as we are now going to give him, for the purpose of comparison and the final correction of any mistakes he may not be able to perceive

himself.

It may be objected that we have given a Key to the exercises in each Lesson in Latin in the lesson that immediately follows it. It must, however, be remembered that Latin is a highly inflected language, and one which the learner will never attempt to speak; while the grammatical construction of the French language is less complicated; and that it should be the chief object of the learner to speak French; and, for this purpose, to drill himself thoroughly in the rules of which each lesson is composed. To induce him to rely as much as possible on his own resources, we have, therefore, deferred commencing a Key to the Exercises in Lessons in French until the present

time.

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11. The butcher has the meat. 12. The miller has the meat, and I have the coffee. 13. Have you the water and the salt? 14. Yes, Sir; we have the water, the salt, and the oats. 15. Have we the tea ? 16. No, Sir; the girl has the tea, the vinegar, and the salt. 17. Have I the wine ? 18. No, Madam, you have only the vinegar and the meat. 19. Have you the table? 20. Yes, Madam, I have the table. EXERCISE 2 (Vol. I., page 3).

1. Avez-vous le blé ? 2. Oui, Monsieur, j'ai le blé. 3. Qui a la viande ? 4. Le boucher a la viande et le sel. 5. A-t-il l'avoine ? 6. 7. Avons-nous le blé? 8. Vous avez le blé et la farine. 9. Qui a le sel ? 10. J'ai le sel et la viande. 11. Avons-nous le vinaigre, le thé, et le café? 12. Non, Monsieur, le frère a le vinaigre. 13. Qui a le cheval ? 14. Le boulanger a le cheval. 15. Avons-nous le livre et la plume ? 16. Non, Mademoiselle, la fille a la plume, et le meunier a le livre. 17. Avez-vous la table, Monsieur ? 18. Non, Monsieur, j'ai seulement le livre. Qui a la table? 20. Nous avons la table, la plume, et le livre. EXERCISE (Vol. I., page 3).

Non, Madame, le cheval a l'avoine.

19.

1. Have you the gold watch ? 2. Yes, Madam, I have the gold watch and the silk hat. 3. Sir, have you the tailor's book? 4. No, Sir, I have the physician's book. 5. Have they the baker's bread ? 6. They have the baker's bread and the miller's flour. 7. Have you the silver pencil-case? 8. Yes, Sir, we have the silver pencil-case. 9. Have we the horse's oats? 10. You have the horse's oats and hay. 11. Who has the carpenter's cloth coat ?

12. The shoemaker has the tailor's silk hat. 13. The tailor has the shoemaker's leather shoe. 14. Have you the wooden table? 15. Yes, Sir, I have the carpenter's wooden table. 16. Have they the silver knife? 17. They have the silver knife. 18. The physician's brother has the silver watch. 19. The shoemaker's sister has the silk dress. 20. Has she the leather shoe? 21. No, Madam, she has the satin shoe. 22. Have we the woollen stocking? 23. No, Sir, you have the tailor's silk stocking. 24. Who has the cotton stocking? 25. The physician has the cotton stocking. 26. The lady has the satin shoe of the baker's sister.

ESSAYS ON LIFE AND DUTY.—V.

CHARITY.

CHARACTER can never be said to be complete without the presence of the element of charity. So many false ideas, however, are current concerning the nature of charity, that it may be well to preface this article by reminding the reader that charity is not the synonym for a mere mawkish sentimentality. To be charitable, according to some theorists, is to be indifferent to the distinction between honour and dishonour, good and evil, and to treat even the most flagrant faults with palliative excuse and toleration. Charity, like each of the virtues, must exist in harmony with others, or it loses its claim to be considered a

virtue.

A charity which could exist apart from truth, righteousness, and justice, would only serve to put a premium upon vice and crime. What then, it may be asked at the outset, is charity? It is the wise exercise of the affectionate side of our nature; it is the letting love operate as a motive power in all our varied relationships, as citizens and members of a commonwealth in which each ought to consider the best This can never be done by mere exinterests of the other. pediency, nor from a sense of utilitarian morality; it must be the result of innate beneficence or kindness. Charity refers to incidental to its own nature, and is therefore lenient in its judgour estimates, as well as our actions; it considers the weakness ment about others, not as blind to their faults, but as looking to the frailties of our common humanity, and finding in the errors of others counterparts of the shortcomings which exist in ourselves. Charity considers that there is a common weal, as well as a private weal, and feels the claim of the outside world upon its powers of help and sympathy: thus realising that with all the distinctions which are evidently inherent in the system of things, such as rich and poor, high and low, there is yet a brotherhood of humanity, in which the stronger are expected to help the weaker. Charity considers the terrible exigencies of life into which many are born, and in looking at the lamentable phases of character continually brought to light, it is ever on the alert to educate the masses and to ameliorate the condition of

their dwellings. Charity, moreover, is no spasmodic exercise of generosity, no sudden surprise of human nature into an act of startling goodness, but it is the spirit of the life, that which underlies all our judgments of and our actions towards others. Charity, thus interpreted, is the co-existence and exercise of

the affectionate with the intellectual and judicial faculties of our nature.

No character can claim to be complete without charity. It is possible to let one side of our nature overtop the other, and thus human nature, when love is eliminated, becomes hard, stern, and severe. Some men may be gigantic in intelligence, and dwarfish in affection, but they are monstrosities in human nature. Only the equable development of all our powers can be commensurate with our possibilities, and therefore our respon

sibilities.

A moral science which found no room for charity would develop character very much after the Roman type-hard, stern, and unbending-such as might exist with unflinching bravery and unyielding energy, but which effectually crushes the affectionate side of human nature. Moreover, it is necessary to guard against the great mistake that charity means, in some sort, weakness of character, for there is no such inspiration to acts of self-surrender, self-denial, and self-sacrifice, as is to be found in the influence of this virtue. In proportion to its power is the diminution of that selfishness which so often merges into cowardice, and cripples the exercise of the higher virtues. To be charitable is, for the most part, to have that consideration for others which makes us set aside the comfort or discomfort, the rest or unrest of our own lives. Charity is a virtue which needs careful culture; men are so apt to be disheartened by ingratitude and base treatment, that they tire in acts of beneficence, and sometimes they catch that cynical tone of mind which helps to make them not only indifferent to the wants of others, but misjudgers of the race. We should never form our opinions of the baseness of men from one or two specimens of wrong-doers we may meet with, or charity will receive no encouragement for its culture, and we ourselves shall lose the sweet sensation which comes from its exercise. Let it be remembered that, if we were to argue from the score, not only of utility to others, but utility to ourselves, we should commend charity, as it ministers largely to human happiness, to think well of, and to act kindly towards, those around us.

It often happens that, as nations increase in the luxuries of civilisation, they become more petrified by selfishness. There is a tendency in the eager race to be rich, or to be successful, to forget the wants and claims of others, and to become isolated from them: the fact that the poor are ever so charitable to the poor comes from this, namely, that they are not absorbed in successful ambitions for themselves.

Charity towards others in matters of opinion is much needed; the tendency of every age has been to institute some sort of inquisition or other, by which free thought may feel its penalties. Mankind have been far too ready to put gyves and shackles on the limbs of those whose opinions they disliked and scorned; and in no sphere has the exercise of charity been less experienced and more required than in the region of human judgment and opinion.

The exercise of charity towards others will prepare us for the enjoyment of it in return. There is a knowledge of ourselves which induces humility, and which, while it makes us conscious of our marvellous mistakes and errors, makes us deeply sensitive to the experiences of a charitable consideration. Most assuredly there is a punishment awaiting the uncharitable, as for the most part moral science teaches us that such vice is its own Nemesis, and that the stern and unforgiving in the end have meted out to them the same measure that they have meted out to others.

The virtue of charity is no foe to wisdom. Charity itself requires the exercise of judgment and forethought. Otherwise, charity is in no sense charity, so far as its outworking in acts of beneficence is concerned. Much as men may dislike the name of political economy, or political philosophy, it must be manifest that, were the practical workings of charity presided over by wisdom, as well as inspired by love, the blessedness of its results would be tenfold or twentyfold increased.

We have, however, kept in mind in this essay the fact that charity is a matter which affects our judgments, and criticisms of others, quite as much as our actual beneficence; and no one can claim to have mastered the first elements of moral science in any practical way, much less to have graduated in the high attainments of character, until, as a regulating faculty of the affectionate nature, Charity takes its place side by side with Justice and Truth.

MECHANICS.-X.

THE PULLEY.

IN the machines we have so far considered, the essential parts were rigid. It was a beam, or a spoke, or a complete wheel, or an axle we had to deal with; and if a rope was used, it was only with a view to connecting the power or resistance with these rigid parts. But it may have escaped your notice that, in using a rope for this purpose you had fallen on a veritable machine. Such is the case; a rope is a machine-a most convenient machine-which possesses the peculiar property of not only transmitting a force from one point to another in its original direction, but also sending it, very little impaired, round any number of corners, into

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a corresponding number of successive new directions. This

Fig. 67.

practical advantage everybody is familiar with; nobody more than the British sailor, whose daily work consists in no small degree in sending the muscular power of his arms round all manner of corners for the benefit of the good ship he navigates.

The Pulley, the third of the mechanical powers, is the instrument by which this object is gained in practice. In its simplest form it consists of a rope which passes round a small solid wheel which is itself mounted in a block. In theory, neither wheel

Fig. 68.

nor block are indispensable parts of the machine; the single essential is the rope, which is supposed to be perfectly flexible, and to turn round a mere point without experiencing any resistance from rubbing against it, that is, from friction.

The theory of the pulley, thus based on the suppositions of perfect flexibility and absence of friction, may be understood from the upper part of Fig. 67. Let A, B, C, D be any number (say four) of rings, representing so many points, through which a rope passes, enabling a force, P, at one end to balance a resistance, w, at the other. The flexibility being perfect, and no friction between rope and ring, P is transmitted unimpaired, and we have therefore the power equal to the resistance, whether the rings are all fixed in posi tion, or some be movable.

θα

But in practice, the suppositions made do not hold good, neither is the rope perfectly flexible, nor the friction nothing. For the former reason each corner must be rounded off to relieve the rope from the sharp bends at A, B, C, D; and, for the latter, these rounded corners are made into small wheels, as at E, F, G, E, which move round with the rope, and prevent the power being diminished by the friction that would result, wero the rope allowed to slide round them. Thus the theoretical pulley in the upper part of Fig. 67 becomes the practical one in the lower, where the rings are replaced by wheels; and though some friction remains, and default of flexibility to impair P in its transmission, we say practically, as we did before theoretically, that still the power is equal to the resistance.

W

P

Fig. 69.

The relations of the power and resistance in the various forms and combinations of pulley can now be easily determined. There is first the Single Pulley, which is of two kinds, fixed and movable; and of these in various combinations, the more com

that stalk-I mean in the Sanscrit, the Celtic, and the Teutonic.

Of these three-namely, the Sanscrit, the Celtic, and the Teutonic-the first may be considered as the most ancient tongue; the second stands next in age, and the third is the youngest.

You have been led to regard monosyllables as to a large extent of Saxon origin. But many words, commonly considered Saxon, are rather Indo-European, being found in Sanscrit, in Greek, and in Latin, or in one of these besides the modern English. Such words as know, lick, break, yoke, sit, are the common property of the Sanscrit, the Latin, the Greek, the German, and the English.

Had I space to exhibit the proofs of the relationship of these languages, I should dwell on the similarity which prevails in the modifications of number, person, case, tense, etc., which they severally undergo; but I can, in addition, do nothing more than set down in different tongues the variations of a few words of universal prevalence, which indicate a common origin.

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LESSONS IN ARCHITECTURE.-III. CYCLOPEAN OR PELASGIC ARCHITECTURE EARLY MONUMENTS.

AFTER the brief sketch of the origin of architecture in our last lesson (Vol. I., page 369), we must notice in proper order that system of construction, the monuments of which cover a great part of the Old World. This system had its origin among the Shemitic tribes, which at the commencement of civilisation peopled the fairest part of the globe. This early system, noted for the rudeness of its form, its stability without mortar, and the great size and irregularity of its materials, is attributed to the Pelasgians, a people originally from Upper Asia, who, according to Herodotus, spread themselves over Phoenicia and Asia Minor, and colonised Greece and Italy. Examples of this style of architecture, called Pelasgic, are found extending from the borders of Persia and Armenia to the western limits of Asia. The term "Cyclopean" is also applied to this kind of architecture, because, in Greece, these buildings of huge rough blocks of stone were fabled to be the work of the Cyclopes-a race of giants with one eye in the middle of the forehead, who laboured at the forges of Vulcan, the fire-god of the Greeks, and patron of all who wrought in iron. Crossing the Mediterranean, it spread over Greece, where the most remarkable monuments described by ancient authors, from the age of Hesiod and Homer, are traced, according to tradition, as far back as eighteen centuries before our era. This was the style of construction used in the heroic times of ancient Greece; and at a later period it was employed on certain important occasions.

The migrations of the Pelasgi carried this system into Italy, and we meet with it at every step, particularly in the central countries. Examples are also to be seen in nearly all the western islands of the Mediterranean, in the Balearic Isles, and some even on the coasts of France and Spain. In fine, by a remarkable coincidence, travellers who have drawn and described the monuments of Palenqué and Papantla, cities of Mexico destroyed long ago, and grown over by forests, exhibit constructions similar to those of the Pelasgi. The gigantic remains of the Pelasgic monuments, to this day subjected to examination by travellers, bear traces of different modes of building. Those which seem to be the most ancient are composed of blocks of

stone, or rather of rocks, so rude and so immense that Pausanias, in speaking of the walls of Tiryns, near Nauplia, in Greece, built thirty-six centuries ago, describes them thus :-" These walls are constructed of unhewn stones, and are all of such dimensions that a yoke of oxen could not shake the smallest of them. The interstices are filled up with smaller stones, which serve to unite the larger ones." These walls present the same appearance now which they did in the days of Homer and of Pausanias. They are about 25 feet thick, and about 43 feet in height. Two temples, close to each other, in the island of Gozo, near Malta, are analogous in their construction to the walls of Tiryns. They are built of immense blocks of stone, forming a sort of artificial hill, in which are placed the naves and arches of the temples; but some of the rocks bear traces of the mason's tools.

It has been proved, by careful examination, that these edifices were dedicated to the gods of Asia. To conclude: the walls of Tarragona, on the east coast of Spain, are constructed, like the preceding, of immense rocks in their natural state. The application of instruments to building, at a later period, caused the edifices of the Pelasgians to assume another form. The stones taken from quarries were cut into irregular polygons, and placed one upon another in such a manner as to make the different faces of the geometrical figures which they employed coincide, the salient angles filling up the re-entrant angles formed by two adjoining stones in a manner precisely similar to that used in the present day for building walls of Kentish ragstone or Devonshire limestone. This was the ordinary manner of building under this system of construction. It is met with from Lake Van, on the frontiers of Armenia, to the west of Italy, Sardinia, and the Balearic Isles; and it is found in temples and in tombs, in public and private buildings, and in innumerable military constructions. At last, a third method presents itself in the walls of these early buildings-namely, that in which the stones are fashioned in the square form; and the buildings themselves, assuming the same form, exhibit a greater degree of civilisation, and the invention and application of more exact instruments. The walls of the ancient Mycenae were built in this manner.

The continued and progressive order of these Pelasgic constructions is one of the most interesting facts in the history of the art of building-particularly when we refer them to an antiquity which goes back to the heroic time of Greece. Doubtless the gradual improvement which is to be seen in the walls constructed by this original people, does not reveal all the revolutions of this art in early antiquity; but it enables us to perceive the progress of the greater part of the civilised world, a progress which it must necessarily follow, because it is the nature of all human inventions to pass from early and rude attempts to successive periods of improvement and perfection. The Pelasgic monuments, sketched and studied at the present day, extend over a zone which, comprising the breadth of Western Asia, stretches over Greece and Central Italy; and this is not the whole of the ancient world, as we have already said, in which early monuments composed of rocks in their natural state have been seen by ancients and moderns; but they have been discovered in all the northern countries, and in Africa, from Egypt to the neighbourhood of Carthage; and we have reason to believe that in these countries, to the primitive constructions, a second period succeeded, more refined in its productions, and forming a step from the first attempts to the more perfect examples, of which we behold the numerous ruins in India, in Central Asia, in the valley of the Nile, and in the oases of the desert. These monuments of transition, so to speak, have disappeared under early and actual civilisation, and have even escaped the investigation of travellers.

FIRST REGULAR CONSTRUCTIONS, PYRAMIDS, ETC.

The Pelasgi, proceeding from the Asiatic plateaus, or tablelands, directed their steps towards the west; other Shemitie tribes marched towards the south and east, and peopled India, Persia, Assyria, and Arabia, as well as Ethiopia and Egypt. The art of these tribes, like that of the western branch, passed through a rude and primitive state, as we have shown-through the BETH-EL style, or constructions in unhewn stones. cannot be supposed that these tribes were more privileged than others, and were able, without previous attempts, to hew stones regularly, to mould and cement bricks, and to give to the union

It

of these materials architectural forms, without going through that initiatory process which characterises the origin of all human inventions. Yet the plains of Chaldea soon exhibited constructions which had a great influence over primitive art in the East, and formed the basis of a system which extended its branches even to the West. The want of stones in Mesopotamia soon taught the inhabitants to mould bricks, and their most ancient temple mentioned in the Bible, called the Tower of Babel, was an immense pyramid built of bricks piled on one another, and forming, according to report, eight storeys or rows, gradually receding from each other. At the top of this building they sacrificed to Baal; at a later period the Chaldean kings placed his statue there, when their artists had made some progress in the art of sculpture. It is probable that this pyramidal-formed temple owed its origin to their remembrance of the practices of those Caucasian countries whence the Shemitic tribes derived

is evident that these first regular constructions were thus generally established; and the greater part of the primitive world adopted them, with the exception of those countries where great political events interrupted the first movements of civilisation, and suspended the march of the arts; with the exception also of those whose inhabitants, less endowed by nature, necessarily remained in the rear of civilisation, and only received a movement of this kind from their neighbours, or from an invasion of some people more advanced in civilisation. The first builders worthy of the name from their ability to mould bricks, and hew stones to raise their gigantic monuments, were compelled to follow the road in which they were placed. The want of experience, the absence of instruments and machines, prevented them from raising, at first, great edifices with vertical façades or fronts, such as they were enabled to construct at a later period. To form large foundations, and to raise above them

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their origin. Herodotus gave a glimpse of the truth, when he said that the Scythians made their temples or altars with a great quantity of wood heaped in the form of a pyramid. However the case may be, this very simple form, which appears to have come naturally to the minds of those men who were the first to raise large constructions, spread itself over all Asia; the ancient pagodas of India are built in this form; the most ancient monuments of Lower Egypt and Ethiopia, where the Shemitic tribes settled in Africa, are all of them pyramids. In Asia whole cities-Ecbatana, for example-presented numerous concentric enclosures rising one above another in such a way as to exhibit the pyramidal form. The celebrated Hanging Gardens of Babylon, formed of numerous terraces, one above another, had also the same configuration. In short, this must be considered as the progress of architecture, when we see that the most ancient religious edifices of the Mexicans are immense pyramidal buildings, simple at first like those of Chaldea, and of Lower and Upper Egypt; but at a later period ornamented with sculpture like the pagodas of India. Ancient public buildings were also found in Mexico of a pyramidal form. It

materials with gradual and numerous recesses such as would prevent the fall of the upper parts of the building, was the first law of construction and of statics to which they were obliged to submit. This is so true that, after having made their great steps in the art of building, and become able builders, the Indians, the Chaldeans, the Ethiopians, and the Egyptians, still continued in the path of which the pyramid was the startingpoint, by raising their edifices in such a manner as to give to their façades a great inclination in order to obtain greater sta bility; a wise system, which was adopted by the Etruscans when they left Asia, where these principles were long established. They were also spread over a part of Italy, and traces of them are found at Norchia. The same ideas exerted their influence over the early edifices of the Greeks, and they are found in a modified form among the finest specimens of their later architecture. They are recognised, for instance, in the remains of the Parthenon, or Temple of Minerva at Athens, where the inclination of the jambs of the doors and windows still exists. Mexico also bears witness to this, as may be seen in our remarks on the first regular constructions of that country.

COMPARATIVE ANATOMY.—I. INTRODUCTION-TERMS EMPLOYED IN CLASSIFICATION. THE simple instructions given by Linnè to all succeeding naturalists were "Observe and compare." This Swedish naturalist, whom we call Linnæus, assiduously followed his own maxim, and became one of the greatest masters of the description, and the largest contributor to the science of the classification, of living things whom the world has known.

All the higher animals are free, locomotive, well-defined individuals. Each has within the circumscribed limits of its body, whether that body be of moderate dimensions or extremely minute, every organ which is requisite to self-existence and reproduction. The actions which the body has to perform in order to carry on that orderly system of constructive change which is always associated with life, are very numerous. To perform these actions, many complex organs are required; hence an animal is a very compact piece of machinery, no part of which can be dispensed with without crippling the whole. As in a large factory every band, and wheel, and rod, from the great piston to the little bobbin, has its separate office, the adaptations to which have required thought and contrivance; so there is no part of any animal which is not fitted to carry out some necessary function.

of different animals, it is found that they are not totally dissimilar structures. The first thing which strikes the student is that a very large number of animals are constructed upon the same ground-plan-they differ only in the details of their structure. Now, the details of structure are often most apparent on the exterior, while the essential plan lies deeper. The anatomist (i.e., dissector) will often reveal a similarity between two animals which the zoologist would not suspect. If we take two animals so utterly dissimilar in size, outward form, and habits as the bat and the pig, and dissect them, we shall find that in the main they are alike. Not only is there a bony axis composed of many joints in the interior of the body of each, which supports the animal, gives origin to the muscles, and protects the nervous matter, but with few and slight exceptions we find bone for bone, muscle for muscle, nerve for nerve, in comparing each point of the internal structure of the two animals. Not only is the fore-limb of a dog built upon the same plan as the arm of a man, but it is essentially more like it than it is to the hind-limb of the same animal.

The similarity of structure which is found throughout a very large number of animals is the first fact which strikes every candid student of comparative anatomy. It is fortunate for the study that this is the case. If every animal were built up on an independent plan, no one could hope to gain a comprehensive view of the structure of the animal kingdom; nor would the study be so interesting, for the human mind delights in similitudes and generalisations; moreover, on this likeness of structure all classification of animals depends.

The outward form of animals is often beautiful, and the study of it instructive; but it is obvious that we cannot expect to know anything of the animal, considered as a machine, until we have searched it throughout by cutting down to every internal organ, and examining all the peculiarities of each. If we neglect In pursuing his study, the comparative anatomist finds that to do this, it is not only probable, but certain, that in the un- while a very large number of animals are constructed after the examined part we shall leave some secret of its life, some same pattern, this pattern does not run through the structure of admirable contrivance, some wonderful adaptation, unnoticed. all animals. He finds another multitude of animals which are This leads us to the conclusion that in order to acquire a know-built upon a plan common to them all, but this plan is quite ledge of living things we must use the knife. The microscope, different from that which characterises the first group. When the injecting syringe, and all the appliances of modern science, he has determined the number of these large groups, he finds may be used, but the knife or scalpel is indispensable, and the further that each species in one of these groups is not in the nse of it has given a name to the science. The word anatomy same degree like or unlike every other of the same group. If is derived from the Greek ava (an'-a), through, and roun (tom'-e), a, b, c, etc., represent a number of animals in a large group, he a cutting. In following the Linnæan direction to observe in finds that o is not as like to a as b is to a, so that he can this realm of Nature, it was natural that the only means of ob- arrange them in something like order, placing one next to that servation should give its name to the science which sprung out to which it is most like, so as to show that though z be to a of the investigation. At first, however, the study was directed great extent unlike a, yet it is connected with it by the interupon one species only. If in more senses than one the proper mediate links. Our student also will find that each species is study of mankind is man, it was natural that at first the human not in the same degree like or unlike even its next door neighframe should have monopolised all the attention of scientific bour, as every other two next door neighbours are. In other dissectors. Hence the word anatomy was applied to the study words, there are gaps in the series, and very useful these gaps of the structure of the human species. As science advanced, are, because they enable us to split up the tens of thousands of other animals were examined in the same way, and the new species which belong to each group into natural sections. The study, as it always suggested a comparison with the results of great groups themselves are probably only caused by very wide the old, was called comparative anatomy. gaps; and these groups are subdivided by less marked gaps into smaller groups, and so on. The reader must always remem ber that the vast scheme of animated nature is far more complex than any of these poor illustrations express, or else he will be misled by that which was intended to explain it. Perhaps the best illustration of the relations of animals to one another is that of the richly-branched head of a large tree. In summer, when the leafy covering presents an even surface to the eye, the connection of the ultimate twigs is not apparent; but in winter we can see that a number of twigs spring from one little bough, a number of these boughs spring from a branch, and a number of these branches may be traced down to where they diverge from the giant fork.

Comparative anatomy is a study of all the parts of all the different kinds of bodies which are found in the animal kingdom, 80 far as structure is concerned. Strictly speaking, it treats of the dead animal alone. It describes the machine when the motive power has ceased to act. Nevertheless, in examining the structure of a species it is quite impossible, and very undesirable, to exclude the idea of the function which the several parts have to perform when animated with life. Thus the twin studies of anatomy (or the structure of living beings) and of physiology are indissolubly connected, though distinct from one another. The mechanist has to do with the several parts of the engine while they are at rest, but every fitting is constructed with reference to motion. He cannot exclude the idea of motion while he is constructing his machine. He asks himself at every stage, Will it go? will it do its work well? The works of God cannot be constructed by man, and their simplest contrivances can scarcely be imitated; but man can examine and analyse them, and as he does so he will be continually asking himself, How does this structure act in the living animal ? and exclaim, as knowledge dawns upon him, How admirably is this organ constructed to do its work!

The words comparative anatomy, however, suggest another truth-they suggest that living beings may be compared with one another. Every animal might be made a study by itself, as man has been. The fact that man's frame has been the subject of thousands of books, and the object of millions of investigations, and still affords unsolved problems, shows that the study of each species is almost unlimited. On comparing the bodies

It follows from this arrangement that a great many things may be said about the structure of each animal in one group which will be true of all in that group. A great many more facts may be stated of the animals of a smaller group, and so on. Now, these statements are the results of comparative anatomy, and the only true grounds of classification.

The comparative anatomist has a most difficult task before him, and the collected wisdom of all comparative anatomists has not saved them from many blunders; but every student of the science has this satisfaction: he knows that the classification which is being worked out is not an imaginary but a real one. The classification which unites animals into groups within groups, grounded on their likeness more or less to one another, indicates a real and natural relationship in those which are placed together. Whether this classification indicates a material blood-relationship, or reveals the plan of the Almighty

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