The Edinburgh Philosophical Journal, Band 14

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Archibald Constable, 1826
Contains proceedings of the Royal Society of Edinburgh, the Wernerian Natural History Society, etc.
 

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Seite 89 - Dense clouds, near the earth, must possess the same heat as the lower atmosphere, and will therefore send to the earth, as much, or nearly as much heat as they receive from it by radiation. But similarly dense clouds, if very high, though they equally intercept the communication of the earth with the sky, yet being, from their elevated situation, colder than the earth, will radiate to it less heat than they receive from it, and may, consequently, admit of bodies on its surface becoming several degrees...
Seite 185 - ... of a steel wire on the side of the jar, one stroke only being given at a time, and repeated at intervals of a minute or two ; when placed in a large basin of water the sound is much obscured, and is like that of a watch, one stroke being repeated, as before, at intervals. The sound is longest and oftenest repeated when the...
Seite 185 - In a small apartment they are audible at the distance of twelve feet. "The sounds obviously proceed from the mouth of the animal ; and, at the instant of the stroke, we observe the lips suddenly separate, as if to allow the water to rush into a small vacuum formed within. As these animals are hermaphrodites, requiring mutual impregnation, the sounds may possibly be a means of communication between them ; or, if they be of an electric nature, they may be the means of defending from foreign enemies...
Seite 377 - The number of deaths is about 332,708 yearly, which makes nearly 25,592 monthly, 6898 weekly, 914 daily, and 40 hourly. The deaths among the women are in proportion to those of the men as 50 to 54. The married women live longer than those who continue in celibacy. In the country, the mean term of the number of children produced by each marriage is 4 ; in towns the proportion is 7 for every two marriages.
Seite 139 - On the Diurnal Deviations of the Horizontal Needle when under the influence of Magnets.
Seite 380 - Middlesex, machinist; for an improved power-loom for the weaving of silk, cotton, linen, wool, flax, and hemp, and mixtures thereof.
Seite 379 - Middlesex ; who, in consequence of a communication made to him, by a certain foreigner residing abroad, is in possession of certain improvements in the construction of Rotatory Steam- Engines, and the apparatus connected therewith.
Seite 227 - Page 78 that the animals had fallen during the antediluvian period into the open fissures and there perishing had remained undisturbed in the spot on which they died, till drifted forwards by the diluvian water to their present place in the lowest vaultings with which these fissures had communication...
Seite 362 - ... upon the paper ; or it is better to mix it previously with the colouring matter. The glaze is then given to the paper with a hard brush. It facilitates the action of screws, and from its unctuosity, may be employed with much advantage, for diminishing the friction of the parts of machines which are made of metal. GEOLOGY. 17. Professor Buck-land's Notice of the Hyaenas" Den near Torquay. -—Professor Buckland has lately sent to Professor Jameson, for the College Museum, several specimens of...
Seite 195 - ... perfect mixture. When it is to be used, mix it with about a fourth part of its weight of water, added gradually, stirring the mass well the whole time, until it forms a thick paste, in which state it is to be spread like mortar upon the desired surface. It becomes in time as hard as stone, allows no moisture to penetrate, and is not cracked by heat. When well prepared it will last any length of time. When in its plastic or soft state, it may be colored of any desired tint.

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