Annual of Scientific Discovery: Or, Year-book of Facts in Science and Art for ...1864 |
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Zadetki 6–10 od 84
Stran 20
... feet , the highest elevation yet attained by any railway incline . It is 15 miles . long , and its average gradient consequently 1 in 46.39 . The highest gradient is one in 37 , and the sharpest curve 15 chains radius . The tunnels are ...
... feet , the highest elevation yet attained by any railway incline . It is 15 miles . long , and its average gradient consequently 1 in 46.39 . The highest gradient is one in 37 , and the sharpest curve 15 chains radius . The tunnels are ...
Stran 21
... feet and being 129 feet high , and another , of a like num- ber of arches , with a maximum height of 143 feet . The quantity of cutting amounts to 2,067,738 cubic yards , and of embankments to 2,452,308 cubic yards . There are twenty ...
... feet and being 129 feet high , and another , of a like num- ber of arches , with a maximum height of 143 feet . The quantity of cutting amounts to 2,067,738 cubic yards , and of embankments to 2,452,308 cubic yards . There are twenty ...
Stran 22
... feet ) was described as about to be put in practical operation . A recent report of the Pneumatic Despatch Company now states , - " That since the 20th of February , 1863 , the authorities have discontinued their street conveyances ...
... feet ) was described as about to be put in practical operation . A recent report of the Pneumatic Despatch Company now states , - " That since the 20th of February , 1863 , the authorities have discontinued their street conveyances ...
Stran 23
... feet deep , a short distance out of London , where he had put up an engine forty - five years ago ; the long iron rods which had been placed in it had been painted with red lead , and the metal had remained unchanged in all that period ...
... feet deep , a short distance out of London , where he had put up an engine forty - five years ago ; the long iron rods which had been placed in it had been painted with red lead , and the metal had remained unchanged in all that period ...
Stran 24
... feet in diameter , and the effect of using this alloy will be to keep the weight of the instrument within reasonable limits , notwithstanding its possession of means and appliances not hitherto bestowed on such instruments . In the ...
... feet in diameter , and the effect of using this alloy will be to keep the weight of the instrument within reasonable limits , notwithstanding its possession of means and appliances not hitherto bestowed on such instruments . In the ...
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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.