The Edinburgh Philosophical Journal, Volume 91823 Contains the proceedings of the Royal Society of Edinburgh, the Wernerian Natural History Society, etc |
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Page 21
... temperature which the cracked crust of the globe , strongly heated in its interior , had given to the ambient atmosphere ? Can the fresh - water shells be distinguished with certainty , by means of precise characters , from those of ...
... temperature which the cracked crust of the globe , strongly heated in its interior , had given to the ambient atmosphere ? Can the fresh - water shells be distinguished with certainty , by means of precise characters , from those of ...
Page 25
... temperature under the equator and in the tem- perate zone , we find , however , that , in the present state of our planet , the shells of the Tropics ( among which the univalves predominate , as among the fossil testacea ) differ much ...
... temperature under the equator and in the tem- perate zone , we find , however , that , in the present state of our planet , the shells of the Tropics ( among which the univalves predominate , as among the fossil testacea ) differ much ...
Page 52
... temperature on the instrument be perfectly compensated , ought to be more equable than in any other region , where the direction of terrestrial magnetism is more nearly in the plane in which the balance vibrates . In the important and ...
... temperature on the instrument be perfectly compensated , ought to be more equable than in any other region , where the direction of terrestrial magnetism is more nearly in the plane in which the balance vibrates . In the important and ...
Page 96
... temperature at which the vacuity reappears , which is almost the same as that at which it vanishes , our author plunged the topaz in heated water , and , by means of an accurate thermometer , obtained the follow- ing results : Nature of ...
... temperature at which the vacuity reappears , which is almost the same as that at which it vanishes , our author plunged the topaz in heated water , and , by means of an accurate thermometer , obtained the follow- ing results : Nature of ...
Page 98
... temperature of 80 ° , it va- nishes in a brilliant speck , leaving the whole of the cavity ABCD of the same uniform tint as in Fig . 4 . The phenomena now described are not so distinctly seen when the stratum m n is deeply seated ...
... temperature of 80 ° , it va- nishes in a brilliant speck , leaving the whole of the cavity ABCD of the same uniform tint as in Fig . 4 . The phenomena now described are not so distinctly seen when the stratum m n is deeply seated ...
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Expressions et termes fréquents
ammonia angle animal antimony appear Appennines atmosphere basalt beds Berthollet calcareous carbon caves cavity characters chlorine clay-slate colour condensed considerable contains copper crystals Delambre deposit deviation diamond distance Ditto double refraction Dr Brewster Edinburgh embryo experiments feet fluid formation fossil gabbro geognostical geognosy Giel globules gneiss granite greywacke gypsum heat Humphry Davy hyæna inch iron Jumna Jura Jura limestone limestone magnetic marine marl masses means melted memoir miles minerals mountain muriatic muschelkalk nature nearly needle observed occurs optical oxide pass petrifactions plants plate plumbago population position present primitive prism probably produced Professor Pyrenees quantity refraction remains remarkable river rocks salamander sandstone shell limestone shew shewn side slate slaves snow Society species specimens steam Struve substance sulphuric acid surface temperature tion transition tube tuffa vacuity vapour vessel volcanoes zinc
Fréquemment cités
Page 208 - A description and draught of a new invented Machine, for carrying Vessels or Ships out of, or into, any Harbour, Port, or River, against Wind and Tide, or in a Calm...
Page 17 - He was able to measure the thickness of the bed of snow over the stream very accurately by means of a plumb-line let down through one of the holes in it, which are caused by the steam of a great number of boiling springs at the border of the Jumna, the thickness 40 feet 5£ inches.
Page 41 - Th' ethereal dome, in mournful pomp array 'd, Now lurks behind impenetrable shade ; Now, flashing round intolerable light, Redoubles all the terrors of the night. Such terror Sinai's quaking hill o'erspread, When Heaven's loud trumpet sounded o'er its head. It seem'd the wrathful angel of...
Page 40 - ... light, completely embracing the circumference of the mast, and attended with a flitting or creeping motion, as exemplified experimentally by the application of common phosphorus upon a board ; and the fore and mizen top-gallant-mast-heads exhibited a similar appearance in a relative degree. This curious illumination continued with undiminished intensity for the space of eight or ten minutes, when, becoming gradually fainter and less extensive, it finally disappeared, after a duration of not less...
Page 19 - Jumna, on the SW side of the grand Himalaya ridge, differing from the Ganges, inasmuch as that river has the upper part of its course within the Himalaya, flowing from the south of east to the north of west ; and it is only from iSuchi, where it pierces through the Himalaya, that it assumes a course of about south 20° west.
Page 181 - ... like pumice stone, only, it has the whiteness of porcelain, graduating however into light grey, and other shades, as it recedes from the intense heat. In a few instances I obtained upon the charcoal, when this substance terminated both poles, distinct, limpid spheres, and at other times they adhered to the frit like beads on a string. Had we not been encouraged by the remarkable facts already stated, it would appear very extravagant to ask whether this white frit and these limpid spheres could...
Page 382 - ... dropped into the fluid instantly made it boil, from the heat communicated by it. To prove in an unexceptionable manner that the fluid was pure sulphurous acid, some sulphurous acid gas was carefully prepared over mercury, and a long tube perfectly dry, and closed at one end, being exhausted, was filled with it ; more sulphurous acid was then thrown in by a condensing syringe, till there were three or four atmospheres ; the tube remained perfectly clear and dry...
Page 382 - Much stronger lubes are however required for carbonic acid than for any of the former substances, and there is none which has produced so many or more powerful explosions. Tubes which have held fluid carbonic acid well for two or three weeks together, have, upon some increase in the warmth of the weather, spontaneously exploded with great violence ; and the precautions of glass masks, goggles, &c. which are at all times necessary in pursuing these experiments, are particularly so with carbonic acid....
Page 178 - Bolton and Watt. By this means, as much low pressure steam of four pounds on the square inch may be generated by one bushel of. coals, as could be produced in the old engine by nine bushels. This most important result, was obtained by actual experiment. Since these great improvements have been...
Page 276 - LL are teeth for a catch to drop in from the axis, and are so contrived, that they catch in an alternate manner, to cause the fans to move always forward, for the wheel...