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and reindeer are well known; still more remarkable are those Board of Instruction as well), the first thought arising to from the Kessler hole, near Schaffhausen, in Switzerland. the mind when botany or botanist is mentioned, is a vague A sketch of a reindeer feeding, now in the Rosgarten picture of "a sort of barmless crank," wandering about Museum, Constance, and one of a horse, in the Schaffhausen fields, woods, and bogs, picking insignificant weeds and carMuseum, both from this locality, are so true to nature that rying them home, principally to tear them in pieces when he one is surprised that they could have been drawn by a per- gets there. I urge, with the professor, the necessity of modson not regularly instructed. Yet the draughtsmån lived ernizing botanical instruction in colleges and normals, and at a time when the Linth glacier covered the site of the would add to the list pharmaceutical and medical institupresent city of Zurich, and the musk-ox and reindeer pas- tions. Examine the text-books on materia medica used in tured where now grow the vineyards of the Rhine.

these latter institutions, and what do you find ? Simply an Several curiously inscribed stones and shells have within alphabetical arrangement of drugs. This does not meet the the last few years been found in the eastern United States, needs of the subject treated, for a student should be trained regarded by their owners as the work of aboriginal artists. to study drugs in accordance with their analogy to other Two of them represent the mammoth; others, scenes from drugs, and pot according to their indexial position in a lanlife, as battles. While not to be rejected at once, grave sus- guage.

In order to do this he must have, not a rudimentary picion attaches to all such for obvious reasons, the first of knowledge of botany and vegetable chemistry, but a thorwhich is the constant recurrence of frauds in American an

ough and systematic attainment of the subject, not only as tiques. There is now no doubt that Professor Wright was represented by the flora of the campus and surrounding deceived in the small terra cotta image from a great depth in woods and fields, but of the world at large. Upon opening Montana which he described; and it is very easy for an en- these actual text-books we shall find atropine, an inflamatory thusiast to fall into such snares.

poison, preceded by aspidium, an anthelmintic, and followed An Aboriginal Pile-Structure.

by aurantia, a simple carminative, none of these bearing the

least rational relation to the others. An index would have A late issue of the Peabody Museum of Archæology is a

found these drugs readily, while their disposal in this manreport upon pile-structures in Naaman's Creek, near Clay

ner will teach the student nothing, nor will it in the least mont, Delaware, by Dr. Hilborse T. Cresson. It will be

assist his memory to retain the uses of them. remembered that in Science, Vol. XV., p. 116, etc., there

Drugs of botanical origin are as closely allied to each was a correspondence on the character of the structure which

other medically as the plants from which they are derived these pile remains indicated. The facts as set forth in the

are botanically; therefore in the above illustration atropine pamphlet now published show that at the mouth of Naaman's

should bave been preceded by stramonium and followed by Creek three groups of pile-buts were discovered, in a line hyoscyamus. Again genera and families of plants have running from north to south across the creek. In the im

true and constant familial and generic drug action, and the mediate vicinity, at various depths in the mud and gravel, individual species of these bave idiosyncracies of action peabout 700 stone implements were found, some quite rude, of

culiar to themselves. To continue the same illustration, argillite, others highly finished, of jasper, slate, quartz, etc.

belladonna and atropa, with their atropa atropine; straAs the mouth of the creek where it falls into the river was

monium, with its datura-atropine; and hyoscyamus, with evidently a favorable camping and fishing ground for the

its hyoscyamine; together with other Solanaceæ to which natives, these implements might reasonably have been ex

botanical family they belong - all cause delirium, but its pected in such a locality. Was their presence in any way

character differs in each drug; they all dilate the pupil, but related to that of the piles ? Dr. Cresson conjectures that

the expression of the face under the dilation is dissimilar; the piles originally formed native fish-weirs. It may be so,

they all cause spasmodic action, but the spasms are varied; but a careful study of the plans which he furnishes, and an

and among other symptoms they all cause an eruption of the inspection of the piles themselves at Cambridge, lead me to

skin, but in each case the eruptions may be readily distin. think they were intended as supports for some structure

guished. This study may be carried through the whole which rested upon them. Were they the rude piers of some

range of the drug action, not only in the family here preearly Swedish bridge across the creek ? Were they the

sented, but through the whole natural plant system as well. abutments of an ancient wharf ? Were they the foundations

This being true, should not the medical student's first trainof dwellings? The average size of the groups, about 12 by ing in materia medica be a thorough course in systematic 6 feet, would answer the requirements of the latter theory; botany ? and palefittes were by no means unknown among the Ameri

Pure science in the collegiate study of drugs has of late can aborigines.

been set aside for the greater study of the less useful ques

tions of etiology and diagnosis. Of what immediate care to MEDICAL BOTANY.

the patient are hours of scientific and exhaustive guesswork BY CHARLES FREDERICK MILLSPAUGH, M.D.

as to what caused bim to be ill, when he knows that this is In looking over the prospectuses of the various medical followed by but a moment's thought expended upon the colleges of the United States, one fails to find in a great ma- more vital question of what drug should be employed to jority of them anything to indicate that the important sub- make him well again ? Take up the first medical magazine ject of medical botany is taught One wonders at the apathy at your hand; in it you will doubtless find a long dissertaof medical institutions in this respect when pausing to con- tion upon some case in practice. Column after column sider the fact that seven-tenths of the drugs in general use will be found to be devoted to the elucidation of points of have a vegetable origin, and an action upon the animal diagnosis and etiology, and suppositions, perhaps, of baceconomy analogous to their botanical relationship.

terial invasion and cell disintegration, then a line or two to I fully agree with Professor Barnes' in his statement that, therapy, then the post mortem. to the general public (and I am sorry to add, to the average Careful, comprehensive, differential, and comparative 1 Science, Vol. XX., page 62.

study of botany and vegetable chemistry in their relation to

materia medica must be followed in order to educate a good therapist, and the sooner our medical institutions make a requisite of this branch, the better it will be for patients treated by their graduates.

law can hardly be taught as a science, for law is -- and should be known as - a science.

Education preliminary to the study of law has also risen greatly. Latin is now a usual requirement, and we nay doubtless soon see it a universal one.

The day is not far distant then, let us hope, when the title Doctor or Lawyer will in itself mean an educated man.

N. H.

LETTERS TO THE EDITOR.

Correspondents are requested to be as brief as possible. The writer's name is in all cases required as proof of good faith.

On request in advance, one hundred copies of the number containing his communication will be furnished free to any correspondent.

The editor will be glad to publish any queries consonant with the character of the journal.

The Elm-Leaf Beetle, Galeruca xanthomelæna Schr.

IN Science, No. 492, for July 8, 1892, Dr. C. V. Riley records the facts, that at Washington, D.C., the imagos from the first brood of larvæ of the above insect had already appeared, and that eggs from beetles of this summer brood had been obtained June 28. In a letter dated July 27, Dr. Riley informs me that from these eggs larvæ bad been obtained and that these larvæ were then pupating. Dr. Riley's observations are positive, and prove

ON THE PRESENT TENDENCY TOWARDS HIGHER

STANDARDS OF PROFESSIONAL EDUCATION. ONE cannot but observe with pleasure, in the present general advance and spread of higher education, that this advance is affecting not only the institutions of higher learning themselves and the general population, but also the strictly professional or technical schools. And whilst I wish in this short paper to refer more especially to law and medicine, my remarks will apply also to other- perhaps to all other - professions.

The medical education of this country has, deservedly enough, for many years been looked upon with little favor, and has ill stood the test of competition with the methods of other countries; but now we are observing a great change in this respect, and there is no doubt that before many years the degree of M.D. from an American university will be as valuable a certificate on its face as can anywhere be obtained. Medical courses of four years' duration are now being adopted, or have already been adopted, by the leading medical schools in the country. The requirements in preJiminary education have also greatly increased, and one may hope that before long such subjects as botany and zoology may be added to the requirements of a good English and general education from the intending student of medicine. State legislation itself has not been idle, and we find in the State of New York, for example, that no person can practise medicine without undergoing an examination conducted by ibe State Board of Examiners. A requirement of preliminary education has also been added, and though as yet no more than an elementary education is required, we may hope for better things in future.

As regards the profession of law, the advance is perhaps even more marked; more marked, that is, as regards legal education, for we no pot find that the advance in the requirements for admission to the bar has been so considerable as might be desired, though they have been by no means neglected. Three-year law-school courses, which not so long since were unheard of, have now become the rule rather than the exception; and even in those schools which still see fit to maintain a two-years' course for the degree of bachelor of laws, a graduate course has been commonly added. Towards the general extension of the study of law so as to include the Roman or Civil Law, the tendency is by po means general, caused no doubt by the non-requirement of this branch for admission to the legal profession. Some universities, indeed, in their college courses, offer instruction in this subject; but it must be remembered that the majority of law-students are not college graduates, and so the breadth of their legal knowledge will be measured by the instruction given in the law school, however the depth and extent of what subjects they do touch upon may be increased afterwards. Yale is, I believe, alone among the universities in this country which gives extended courses in the civil law, and encourages their study by the bestowal of a degree (tbat of D.C.L.); but even then the course is one taken by but few students, and, as the catalogue says, is intended for those who intend to be something more than practising lawyers. This is not as it should be, and we must look to the future for more general study of this subject, for without it

FIG. 1.

that there are two broods at least of this insect at Washington, D.C. They prove also that the beetles will mate and oviposit readily in confinement, and that there is only a brief interval between the appearance of the beetles and oviposition for the second brood of larvæ. This means that the beetles of both sexes are sexually mature when they emerge from the pupæ, or that they mature very rapidly and copulate within a very brief period after assuming the imaginal form. The accuracy of these observations I do not question; but neither do I admit that I am in error in claiming that in New Jersey, north of New Brunswick, there is only a single brood of this insect.

My acquaintance with the beetle at New Brunswick began in 1889, in which year I protected the large number of elms in and near the college campus and about the Experiment Station by spraying with a London purple mixture. In the Report of the College Experiment Station for 1888, Dr. George D. Hulst, my predecessor in office, had stated that there were two broods of the insect annually; and on the appearance of the summer brood of beetles, I made ready to spray again as soon as the second brood of larvæ should begin to appear on the protected trees. They never did make their appearance, and I was unable to find a second brood on any other trees in the city. Dr. Hulst, in response to questions, informed me that he had noticed only one brood of larvæ in 1888; but there had been a cyclonic storm about the time they became mature, which freed the trees and covered the ground beneath them with thousands of the slugs, only a few of which ever found their way back to their food.

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To this destruction he attributed the absence of the second brood which published accounts led him to expect. I recorded these facts in my Report for 1889, claiming positively that there was a single brood only at New Brunswick. My observations, carefully repeated in 1890 and 1891, simply confirmed this conclusion.

These observations were presented at a meeting of the Entomological Club of the A. A. A. S., and, though he could not gainsay my facts, Dr. Riley yet doubted the correctness of my conclusion, as his parer in Science also shows. I therefore resolved to repeat my work yet more carefully in 1892 and to make it conclusive if

already had eggs of a second brood. The beetles bred by me fed readily and abundantly for nearly three weeks, and then more slowly, until at this time they refuse to feed entirely. During all this time there has not been a copulation nor an egg-mass in any jar, nor have I observed a copulation or an egg-mass in the open air. On July 30 I observed a disposition on the part of my insects to refuse food and to hide among the dry leaves. I therefore selected a considerable number of them of both sexes for examination. In all, the sexual structures were immature or undeveloped. In the male it was difficult to get the testes, because they were mere empty thread-like tubes. In the females the ovaries were mere bundles of tubes without even partially-developed eggs. I gathered rather more than forty specimens from the trees, and found the same state of affairs, except that in one specimen the ova had begun to develop. This morning I selected a few fresh and fat specimens — all females, as it proved - and though the abdomen was much distended, the distension was caused by the fully-dilated crop and stomach, and the ovaries were yet less developed than in any previously examined. Soon after the beetles appeared in May, I examined a number of them and found that in all the sexual structures were fully matured. In the males the testes were quite rigid coils, which were easily removed entire, while in the females the ovaries so completely filled the abdominal cavity that it was impossible to open it without detaching or crushing some of the eggs. The beetles earliest matured are now seeking winter quarters.

I consider my observations, now carried on for four years in succession, as conclusive of the fact that at New Brunswick, N.J., there is only a single brood of this species annually. I present herewith figures of part of one ovary (Fig. 1) of a beetle taken May 25, in which the uviduct and part of the developed eggs are removed; of the ovaries of a beetle taken July 30 on the trees, in which they were best developed of all those examined (Fig. 2); and of the ovaries of a specimen three weeks old (Fig. 3), with which all the others that were examined agreed in that they were at least no more developed. All the figures were made by the use of a camera with a Zentmayer binocular stand, 2-inch objective, a eye-piece, and drawing-board six inches from camera. The vagina is not shown in Fig. 3, but is as large as that shown at the base of Fig 2, and this is the only structure that has the full size. I bave not considered it necessary to figure the male organs, though the difference between spring and summer beetles is equally striking. In none that I examined did I find anything like a developed testicle.

JOHN B. SMITH, Sc.D. Rutgers College, Aug. 1.

FIG. 2.

possible. The first signs of the beetles were noticed on May 17, in the form of sınall round holes eaten in a few leaves; on the 19th a few of the beetles were seen, and after that date they increased rapidly in numbers for some time. The weather for a few days was cold and wet, the insects were sluggish, and no eggs were observed until May 29. For special observation I selected a small tree between my home and the laboratory, which I passed several times daily, could see all parts of easily, and which was a prime favorite with the insects.

Eggs began hatching June 6, while yet oviposition continued. After the middle of the month the hibernating beetles diminished in number, and on the 30th not a beetle could be found. June 29 the first pupæe were formed and larvæ matured daily thereafter

Wheat Rust and Smut.

As a general rule the Bulletins issued from the various State Agricultural Experiment Stations, while not notable for the amount of original matter they contain, are fairly accurate in their statements, and their recommendations are to be relied upon. Occasionally errors creep in, some of them the result of baste in compilation, others the result of not being conversant with the latest information on the subjects discussed. In the former category must be placed the statement made in Bulletin No. 83 of the Michigan Agricultural Experiment Station that wheat rust can be successfully treated by what is known as the Jensen hot-water metbod; that is, immersing the seed in water having a temperature between 132o and 135° F. Wheat rust has been long under investigation. It has caused a loss of about £2,000,000 sterling annually in Australia, and it is safe to say that there is not a country or a State where wheat is grown that has not suffered from its ravages. The fact is that while wheat rust is described and illustrated in the Bulletin in question, the treatment for prevention of wheat smut is given. It is needless to say that what s applicable to one is not to the other. Farmers who expect to prevent wheat rust by the hot water treatment will be sorely disappointed. Perhaps their disappointment will result in making them question, without cause, however, the benefits to be derived from treating for smut. Between the two diseases there is a vast difference; one (rust) attacks the leaves, the other (smut) attacks the grain. In the latter case treatment of seed will be

FIG. 3.

in greater abundance. At this date a very few unhatched eggclusters were yet to be found, but of those collected, only one muss gave larvæ July 1. Since that date and up to date of writing (Aug. 1), there has not been a cluster of eggs on any tree that I bave examined, and I have closely scanned many dozens, large and small. Early in July I gathered in over 200 pupæ and mature larvæ under the observed tree, and placed them in breeding.cages and jars Adults began to appear July 8, and very rapidly there. after in the open air as well as in my cages. It is interesting to note that on June 29, when I secured the first pupa, Dr. Riley

he says,

66

beneficial. In the former it will do no good whatever. This is are doubtless used to voice the consonants, as in Hebrew. Like mainly because in the former infection takes place probably by other Semitic alphabets, Tefinagh had originally no vowels, but means of spores disseminated by the wind, so that whole fields only three breathings, transformed in some systems (Greek, Italic) soon become infected. It cannot be denied that an effectual to pure vowels, in others (Cufic, Arabic) to semi-vowels and remedy for wheat rust is still a great desideratum.

vocalic bases. But all this merely tends to strengthen the view

JOSEPH F. JAMES. that the Libyan is a Semitic alphabet. Washington, D. C., Aug. 5.

5. This statement is to me unintelligible. In the published

Libyan alphabets (Fr. Ballhorn, “ Alphabete orientalischer und The Ancient Libyan Alphabet.

occidentalischer Sprachen," p. 8; Hanoteau, “Essai de grammaire

de la langue tamachek," and others) curves occur quite as freIn Science, July 15, Dr. Brinton has some remarks on this sub- quently as straight lines, while acute decidedly prevail over rightject, which I have read with surprise. The old Libyan alphabet, angles. Of the eight letters copied by Barth (I., p. 274) two only

appears to have been in common use among the Berber can be described as “more or less complete rectangles," forms tribes of north Africa long before the foundation of Carthage (1), which are certainly less common than, for instance, in Hebrew ... and in its forins is almost entirely independent of the Phoe. and Estrangbelo. nician letters (2). It is composed of consonants called tifinar (3), and 6. It would be strange if resemblances did not occur between vowel-points, known as tiddebakin. The latter are simple dots (4), the Libyan and the characters of the oldest Etruscan inscripthe former are the lines of a rectangle, more or less complete (5). tions,” seeing that both have a common Semitic origin, the former Several of them are found in the oldest Etruscan inscriptions (6). directly through the Phoenician, the latter indirectly through the ... The writers who have given especial attention to this little- archaic Greek. But such resemblances obviously lend po color to known subject are Faidherbe, Duveyrier, Halévy, Bissuel, and, Dr. Brinton's peculiar views regarding Libyco-Etruscan linguistic recently, Dr. Collignon (7)."

affinities. To avoid repetition, and facilitate reference, I have numbered 7. Of the writers here referred to, Faidherbe and Halévy alone the points in this passage on which I should like to offer a few can be regarded as specialists. On the other hand, there are observations.

serious omissions, such as Dr. Oudney, who in 1822 first discovered 1 and, 2. What authority has Dr. Brinton for referring this the existence of the Berber alphabet; F. W. Newman, "Patriarch alphabet to pre-Carthagenian times, and for stating that its forms of Berber philology;” Mommsen and Hanoteau, as above; lastly, are almost entirely non-Phoenician? I have hitherto regarded the A. Judas, who was the first to clearly establish the Phænician Punic origin of the Libyan letters as an established fact accepted origin of these characters in a paper entitled “De l'Ecriture libycoby all epigraphists of weight, and notably by Mommsen, who un- berber," contributed to the Revue Archéologique for September hesitatingly recognizes their Semitic descent: “The Libyan or 1862.

A. H. KEANE. Numidian alphabet now as formerly in use amongst the Berbers Broadhurst Gardens, London, N.W. in writing their non-Semitic language is one of the innumerable offshoots of the primitive Aramæan type. In some of its details

BOOK-REVIEWS. it seems even to approach that type more closely than does the Phænician itself. We are not, however, therefore to conclude

Handbook for the Department of Geology in the U. S. National that the Libyans received it from immigrants older than the

Museum. Part I. Geognosy.— The Materials of the Earth's Phoenicians. It is here as in Italy, where certain obviously more Crust. By GEORGE P. MERRILL. Washington, Government archaic forms do not prevent the local alphabet from being re

Printing Office, 1892. 89 p.

12 pl. ferred to Greek types. All that can be inferred is that the Libyan THE U. S. National Museum is probably the greatest institution alpbabet belongs to the Phoenician writing older than the epoch of its kind in this country. The museums located in New York, when were composed the Phænician inscriptions that have sur- Cambridge, Boston, Philadelphia, and other large cities present to vived to our time” (History of Rome, iii., 1).

the residents of those places and to students many facilities for It follows that the Numidian ancestors of the Berbers received study. Tbis is particularly the case with the American Museum their writing system from the Carthaginians, earliest Phænician of Natural History in New York and the Museum of Comparative settlers on the north African sea-board, and, consequently, that the Zoology in Cambridge. But neither one of these has been planned Libyan alphabet had no currency “long before the foundation of upon so extensive a scale, or is destined to attain such mammoth Carthage.” The archaic forms referred to by Mommsen were the proportions, as the National Museum at Washington. The counforms in use in Tyre and Sidon in pre-historic times, whereas the try at large is familiar with some things to be found at the extant Phænician inscriptions date from historic times; hence museum from the numerous expositions at which displays of its the discrepancies between the latter and those preserved by the treasures have been made; but no one who has not visited and Berbers, most conservative of all peoples.

lingered long in its great but crowded quarters at the National 3. Not the consonants alone, but the whole system (mainly, of Capital can adequately realize the broad foundation upon which course, consonantal as being Semitic) is called “tifinar," or rather it is based, or the immense variety and scope of its collections. "tifinagh." The sounds gh and rh interchange in the Libyan There are gathered together here materials which cover all human dialects (Ghet and Rhet; Melghigh and Melrhirh, etc.), so that it arts and all the natural sciences - anthropology in its widest is not always easy to decide which is the original sound. But sense, from the rude, chipped-flint implement of paläolithic man here there is no doubt that gh is organic; and Barth, for instance, to the delicate Sevres china of civilized man; rocks and fossils always writes Tefinagh, plural Tefinaghen : There was in par- from the most ancient formations to the most recent; animal ticular a man of the name of Sáma, who was very friendly with me. forms from the minutest insect that flies to the bugest creature of On reading with him some writing in Tefinaghen, or the native land or sea. Scarcely an object, indeed, in which man has had Berber character, I became aware that this word signifies nothing aught to do, or to find interest in, but is to be found here. more than tokens or alphabet. For as soon as the people beheld The collections are not, either, lying idle. A large corps of my books, and observed that they all consisted of letters, they ex- curators is constantly at work, either arranging the old collecclaimed repeatedly, “Tefipaghen — ay — Tefinaghen!'” (Travels, tions or studying and comparing the new. The results of these V., p. 116). There is, however, more in this word tban Barth studies appear from time to time in the Proceedings of the Museum was aware of. When stripped of the common Berber prefix te, it a publication scarcely known to the public at large even by reveals the “Finagh," i.e., “Phoenician,” or “Punic" origin of title, on account of its limited circulation - or else in the Annual the letters in their very name. Note the stress still falling on the Reports of the Museum, which are more widely known from being root fin, as in Poeni.

distributed as congressional documents. Unfortunately, these 4. F. W. Newman explains Tidebákka (pl. Tidebákken) to mean last usually appear from two to three years after the date they “a dot on or under the letter" (Vocab.), in fact any diacritical are stated to be reports for. mark of the kind, and not merely vowel signs. Some, however, In the early days, when the Smithsonian Institution was the

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repository for the national collections, these reports touched but lightly upon the vast amount of material stored away. Within the past five years, however, and since the National Museum bas become recognized as the place where all government expeditions shall deposit the material collected by them, a large volume has been annually devoted to this branch alone. Those which have been issued are filled with information upon a great variety of subjects, although special attention seems to bave been devoted to ethnology. Naturally, other matters are treated of, and it is likely that, in the future, place will be given to all departments as fast as the several curators find time or see fit to devote their attention to making the collections under their charge known to the outside world.

The article under review, for it is merely an excerpt issued under a separate cover from the Report of the Museum for 1890, and covering pages 503–591 of that report, is one which, while designed to be a handbook for the collections, is in reality a condensed account of the rocks forming the earth's crust. In it one will find concise descriptions of the sixteen principal elements that go to make up rock masses; a list of the original and secondary minerals of these rocks; an account of the macroscopic and microscopic structure of rocks; the chemical composition (in brief) and the color. The most extensive portion of the bandbook, however, is that which deals with the kinds of rocks. Under this head we have described the four varieties of (1) aqueous, those formed through the agency of water either as chemical precipitates or as sediments; (2) colian, those formed from wind-drifted meterials; (3) metamorphic, those changed by dynamical or chemical agents from an original aqueous or igneous origin; and (4) igneous (eruptive), those brought up from beneath the surface in a molten condition. It is not necessary to go into details as to all these classes, or to mention the various divisions made of them; an extract or two will serve to show the character of the remarks. For example, under Chlorides we read:

“Sodium chloride, or common salt, is one of the most common constituents of the earth's crust. From an economic standpoint it is also a most important constituent. It occurs in greater or less abundance in all natural waters, and, as a product of evaporation of ancient seas and lakes, it occurs in beds of varying extent and thickness among rocks of all ages wberever suitable circumstances have existed for their formation and preservation. Salt-beds from upwards of a few inches to thirty feet in thitkness occur in New York State and Canada, while others abound in Pennsylvania, Virginia, Ohio, Michigan, and Louisiana. There are also numerous surface deposits, of great extent, in the arid regions of the West” (p. 533).

Under the head of Siliceous group, infusorial or diatomaceous earth, we find the following:

“ This is a fine white or pulverulent rock composed mainly of the minute shells, or teats, of diatoms, and often so soft and friable as to crumble readily between the thumb and finger. It occurs in beds which, when compared with other rocks of the earth's crust, are of comparatively insignificant proportions, but which are nevertheless of considerable geological importance. Though deposits of this material are still forming, e.g., in the marshes of Yellowstone Park, and have been formed in times past at various periods of the earth's history, they appear most abundantly associated with rocks belonging to the Tertiary formations.

“ The celebrated Bohemian deposit is some fourteen feet in thickness, and is estimated by Ehrenberg to contain 40,000,000 shells to every cubic inch. The Australian specimen exbibited is from a deposit four feet in thickness. In the United States, beds are known at Lake Umbagog, New Hampshire; Morris County, New Jersey; near Richmond, Virginia; Calvert and Charles Counties, Maryland; in New Mexico; Graham County, Arizona; Nevada; California; and Oregon. The New Jersey deposit covers about three acres, and varies from one to three feet in thickness; the Richmond bed extends from Herring Bay, on the Chesapeake, to Petersburg, Virginia, and is in some places 30 feet in thickness; the New Mexico deposit is some six feet in thickness and has been traced some 1,500 feet; Professor LeConte states that near Monterey, in California, is a bed some 50 feet in thickness; while the geologists of the fortieth-parallel survey report beds not less than

300 feet in thickness of a pure wbite, palebuff, or canary-yellow color as occurring near Hunter's Station, west of Reno, Nevada.

“The earth is used mainly as a polishing powder, and is sometimes designated as tripolite. It has also been used to some extent to mix with nitro-glycerine in the manufacture of dynamite. Chemically the rock is impure opal” (p. 540).

It is in such books as these that the young student finds his best helps. The information given is accurate; the paths are made pleasant; the rough places are smoothed. It is greatly to be desired that the other departments of the Museum may bave as useful descriptions of their contents. JOSEPH F. JAMES.

Washington, D.C., Aug. 8. Phases of Animal Life, Past and Present. By R. LYDEKKER.

London. Longmans, Green & Co. 89. $1.50. This admirable series of essays, which was originally published in Knowledge, has been reprinted in an attractive form both as regards typography and illustrations. The , essays are concisely written, and reveal a wealth of knowledge on the part of the author. The explanations of scientific discoveries and conclusions are neither too elementary nor too technical, and the essays will be read with pleasure as well as profit by anyone interested in zoological lore.

The earlier and the closing chapters of the book are devoted to the consideration of various morphological adaptations, such as protective armor, the modifications of limbs for flying and swim. ming, and the forms of teeth and horns. The author then takes uptbe fossil reptiles, describing the characteristics of the ichthyosaurs, plesiosaurs, and dinosaurs, and explaining the differences between them. Otber chapters relate to the tortoises, the extinct gigantic birds, the egg-laying and marsupial mammals, and other animals whose structure and history are of special interest. There is for the most part no close connection between the various topics, but they are all important and worthy of attention.

In the treatment of morphological subjects Mr. Lydekker makes use of certain metaphorical expressions which may possibly mislead the unwary reader. Various modifications are spoken of as if they resulted from the conscious, intelligent action of the animals concerned. It is stated, for example, that the ancient mailclad fisbes“ appear to have come to the same conclusion as the more advanced divisions of the human race, that a massive armor for the protection of the body is an encumbrance” (p. 7). Again, the reptiles " held divided opinions as to whether a bony coat of mail was or was not a thing to be retained as a permanency." Such expressions are calculated to induce a wrong way of looking at things unless, indeed, the Lamarckian idea that modifications result directly from the efforts of organisms is to be accepted.

One is surprised to find in the writings of so good a naturalist as Mr. Lydekker the statement, or insinuation, that the separation of the amphibians from the reptiles is due to “that tendency to multiply terms for which they (the naturalists) are so celebrated" (p. 8). Mr. Lydekker, of course, well knows and, indeed, takes pains to explain, that the separation was made on account of the fact that the typical representatives, at least, of these two groups are very different both in structure and mode of development. There have undoubtedly been many instances in which naturalists have coined new names unnecessarily, but this is certainly not a case in point.

These are small defects, however, and are entirely overbalanced by the excellencies of the book. It deserves and. will repay perusal.

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AMONG THE PUBLISHERS. “ THE Delaware Indian as an Artist " is the subject of a fully illustrated paper by Dr. Charles C. Abbott, to appear in The Popular Science Monthly for September. The objects of art which are represented include carved-stone gorgets, a wooden spoon-handle, wooden masks, and other carvings, many of them showing much skill. Professor J. S. Kingsley will describe “The Marine Biological Laboratory at Wood's Holl,” giving pictures of its building and interior arrangements. Something is told also of its neighbor, the laboratory of the United States Fish Commission. Surgeon George M. Sternberg, U.S.A., will have a paper on “In

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