Annual of Scientific Discovery: Or, Year-book of Facts in Science and Art for ...1864 |
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Zadetki 1–5 od 36
Stran viii
... thickness below rain , which is at variance with our preconceived ideas . - Cinchona Bark from India . The gradual but certain destruction of the Cinchona forests of America , which has been viewed with so much anxiety by all who know ...
... thickness below rain , which is at variance with our preconceived ideas . - Cinchona Bark from India . The gradual but certain destruction of the Cinchona forests of America , which has been viewed with so much anxiety by all who know ...
Stran 35
... thickness of the layer of non- conducting material ; and this , at the best , is relatively but for a brief period . If the second , only , has been omitted , since the protection arising from vaporization is due to the absorption of ...
... thickness of the layer of non- conducting material ; and this , at the best , is relatively but for a brief period . If the second , only , has been omitted , since the protection arising from vaporization is due to the absorption of ...
Stran 38
... thickness , was prepared to represent the inside case . When in place , there was a space for composition of three inches thickness on every side of the box . In each wooden box was placed a piece of parchment , some white writing paper ...
... thickness , was prepared to represent the inside case . When in place , there was a space for composition of three inches thickness on every side of the box . In each wooden box was placed a piece of parchment , some white writing paper ...
Stran 41
... thickness of the filling , to protect , as long as it may , the contents of the case . THE GREAT BOSTON ORGAN . During the past year there 4 * MECHANICS AND USEFUL ARTS . 41 On opening the furnace, the appearances of the safes ...
... thickness of the filling , to protect , as long as it may , the contents of the case . THE GREAT BOSTON ORGAN . During the past year there 4 * MECHANICS AND USEFUL ARTS . 41 On opening the furnace, the appearances of the safes ...
Stran 55
... thickness , the mode of fastening it , whether single plates or a number of thin ones are the best , with wood backing or without , these are only a few of the questions bearing upon the subject which have received attention . That some ...
... thickness , the mode of fastening it , whether single plates or a number of thin ones are the best , with wood backing or without , these are only a few of the questions bearing upon the subject which have received attention . That some ...
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action ammonia animals appear aqueous vapor astronomers atmosphere atoms Aye-Aye body British Association carbonic acid Carboniferous cause cent chemical color containing depth Devonian diameter discovery distance earth effect electric equal existence experiments exposed fact feet fire French gases give glass graphite gun-cotton gunpowder gypsum heat hundred hydrochloric acid hydrogen inches insects iron length less light liquid London magnesium manufacture mass matter metal miles minute moon mountains nature nearly nitrogen observed obtained organic oxygen paper passed phenomena photographic plants plate portion pounds present pressure produced Prof putrefaction quantity rays recent remarkable result rifled rock rubidium safe salt shot side silica soda solar solar parallax solid species spectrum stars steam substance sulphur sulphuric acid sun's surface temperature thallium thickness tion transmutation of species tube velocity vessel weight whole
Priljubljeni odlomki
Stran 170 - It is conceivable that the various kinds of matter, now recognized as different elementary substances, may possess one and the same ultimate or atomic molecule existing in different conditions of movement. The essential unity of matter is an hypothesis in harmony with the equal action of gravity upon all bodies. We know the anxiety with which this point was investigated by Newton, and the care he took to ascertain that every kind of substance, ' metals, stones, woods, grain, salts, animal substances,'...
Stran 256 - As with an invisible trowel, the mass is divided and subdivided into smaller and smaller portions, until it is reduced to an aggregation of granules not too large to build withal the finest fabrics of the nascent organism. And, then, it is as if a delicate finger traced out the line to be occupied by the spinal column, and moulded the contour of the body...
Stran 306 - Thus, by means of repeated selection alone, the length of the ears has been doubled, their contents nearly trebled, and the " tillering" power of the seed increased five-fold.
Stran 288 - The Negro exhibits permanently the imperfect brain, projecting lower jaw, and slender bent limbs of a Caucasian child some considerable time before the period of its birth. The aboriginal American represents the same child nearer birth. The Mongolian is an arrested infant newly born. And so forth.
Stran 77 - The natural philosopher of to-day may dwell amid conceptions which beggar those of Milton. So great and grand are they, that, in the contemplation of them, a certain force of character is requisite to preserve us from bewilderment.