The Edinburgh New Philosophical Journal: Exhibiting a View of the Progressive Discoveries and Improvements in the Sciences and the Arts, Volume 8A. and C. Black, 1858 |
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The Edinburgh New Philosophical Journal: Exhibiting a View of the ..., Volume 17 Affichage du livre entier - 1863 |
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acid Aiguilles Rouges animal antheridia appears arch Atlantic atmosphere basalt beaver beds body bone Botanical castoreum catch cells climate coast colour coracoid cretaceous crystalline discovery district Edinburgh effect electricity Europe existence experiments fact favourable feet Ferrex fishing flame formation fossils geological gneiss grms Gulf Gulf of Mexico Gulf-stream heat inches insect interesting iodine Journal Ladakh latitude ligament limestone lower magnetic mass meteorological miles Mont Blanc motion mountains natural nearly Neptunian Nubia observations obtained ocean organism parthenogenesis passing period Permian phenomena plants portion posterior present produced Professor remarkable river rocks Royal schists scientific Scotland Scrope seen SERIES.-VOL Shetland Isles side slates Society species specimens spores sugar surface temperature tion trachyte transverse transverse process tube upper valley vegetable velocity vertebra vibrations volcanic winds winter
Fréquemment cités
Page 153 - ... surface cannot afford warmth enough to keep the water liquid. " This effect is well seen by the instant freezing of a piece of ice to a worsted glove even when on a warm hand. But metals may act so, provided they are prevented from conveying heat by surrounding them with ice. Thus, as has been shown, metals adhere to melting ice.
Page 104 - In my former paper on this subject, I think I distinctly showed the existence of a cocoon found in the egg of the leaf insect; and combining these particulars, we have the following chain of facts :— 1. The grub in the egg. 2. A cocoon in the egg, containing the unwinged, imperfectly-developed insect. 3. The unwinged, imperfectly-developed insect in the egg, free from the cocoon, and ready to emerge.
Page 151 - ... in a considerable mass of pounded ice or snow in a thawing state. " 4. Water being carefully frozen into a cylinder several inches long, with the bulb of a thermometer in its axis, and the cylinder being then gradually thawed, or allowed to lie for a considerable time in pounded ice at a thawing temperature, showed also a temperature decidedly inferior to 32°, not less, I think, than 0° 35 Fahrenheit.
Page 330 - That sensations are transmitted to the brain at a rapidity of about 1 80 feet per second, or at one-fifth the rate of sound ; and this is nearly the same in all individuals. (2.) The brain requires one-tenth of a second to transmit its orders to the nerves which preside over voluntary motion; but...
Page 332 - In aqueous vortices the axial spiralities of the exterior and interior portions are in reverse direction to those in the atmosphere, the descending spiral being nearest to the axis of the vortex. Hence, lighter bodies and even bubbles of air are often forced downward in the water, in the manner in which heavier bodies are forced upwards in the atmosphere. The foregoing is simply a statement of results which I have derived from a long course of observation and inquiry. It does not include the partial...
Page 308 - On bringing the six-feet tube down over the flame, and giving rapid motion to the disc, we remark that so long as the flame continues silent the bar or dot is quite invisible, but as soon as the sound commences, the black disc becomes diversified by a series of whitish images of one or other of these objects arranged at equal intervals around the central point.
Page 318 - Baltimore, commissioner to confer with the proper functionaries in Great Britain in relation to some plan or plans of so mutually arranging, on the decimal basis, the coinage of the two countries, as that the respective units shall hereafter be easily and exactly commensurable.
Page 152 - ... Bodies of different temperatures cannot continue so without interaction. The water must give off heat to the ice, but it spends it in an insignificant thaw at the surface, which therefore wastes even though the water be what is called ice cold, or having the temperature of a body of water inclosed in a cavity of ice.* " This waste has yet to be proved ; but I have little doubt of it ; and it is confirmed by the wasting action of superficial streams on the ice of glaciers, though other circumstances...
Page 304 - ... condition to produce those small explosions, which, by their quick succession, give origin to the sound. The effect of motion in bringing about this explosive condition of the flame is well exemplified by the following experiment. Fastening a jet-pipe, some twelve inches in length, into the end of the long flexible tube through which the gas is supplied, and holding it erect by a point a little below the insertion so that we can readily cause it to vibrate, we ignite the gas and adjust it to...
Page 317 - Brown-Sequard, for having shown that various lesions of the spinal marrow in the Mammalia, may be followed after some weeks by a convulsive epileptiform affection, produced either spontaneously or by excitation of the ramifications of the fifth pair of nerves on the side corresponding to that of the lesion. Mr. Delpeach, for making known the accidents occuring among workmen in the India-rubber business from the inhalation of sulphuret of carbon.