Philosophical Magazine

Εξώφυλλο
Taylor & Francis., 1799
 

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Σελίδα 135 - ... burnt, but the feather-bed, the clothes, and covering, were safe. ''I entered the apartment about two hours after it had been opened, and observed that the walls and every thing in it were blackened ; that it was filled with a very disagreeable vapour; but that nothing except the body exhibited any strong traces of fire.
Σελίδα 65 - ... so regulated, that the bubbles may be counted as they rise from the bottom ; and continue the same heat till the solution is completed. Camphor acts more powerfully upon copal than any other substance.
Σελίδα 169 - I was not able to conceive what that caufe could poffibly be, — unlcfs it were either a greater quantity of moifture attached to the external furface of the bottle which contained the water, than to the furface of that containing the...
Σελίδα 7 - Having then placed the jar in this, as far at it would go down, they covered it above, all all round, with clay, except at the two openings, till within about a fifth of its height ; when their furnace •was completed. In this way I reckon there was a full third of the furface of the body of the {till, or jar, expofed to the flame, when the fire came to be lighted ; and its bottom, not reaching to within two feet of where the fuel was, left a capacious hollow between them, whence the wood, that...
Σελίδα 75 - The meleks were feated at fome diitance on the right and left, and behind them a line of guards, with caps, ornamented in front with a fmall piece of copper and a black oftrich feather. Each bore a fpear in his hand, and a target of the hide of the hippopotamus on the oppofite arm. Their drefs conlifted only of a cotton ihirt of the manufacture of the country. Behind the throne were fourteen or fifteen eunuchs, clothed indeed fplendidly in habiliments of cloth or filk, but clumfily adjufted, without...
Σελίδα 349 - ... coat, you find a worthlefs impure pearl. I tried feveral of them, taking one lamella off after another, and found clear and impure by turns ; and in an impure pearl I met with one of a clear water, though in the centre of all I found a foreign particle. The largeft and...
Σελίδα 16 - ... eaten, or the eggs upon the leaves (which* generally happens about the end of May) and which will be found in great numbers on the veins of the leaves on their under...
Σελίδα 167 - ... equilibrium, and were then removed, attached to the arms of the balance, into a room in which the air was at the temperature of 26°, where they were left all night. The result of this trial...
Σελίδα 157 - Indian-rubber, but possesses the same properties, as will be seen from the following experiments and observations made on some which had been extracted from the vine about five months ago. A ball of it, now before me, is to my sense totally void of smell ; even when cut into is very firm, nearly spherical, measures nine and a half inches in circumference, and weighs seven ounces and a quarter ; its colour on the outside is that of American caoutchouc, where...
Σελίδα 168 - ... of fo great a proportion of its latent heat as that fluid is known to evolve when it congeals; and I concluded, that if the lofs of latent heat added to the weight of one body, it...

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