Annual of Scientific Discovery: Or, Year-book of Facts in Science and Art for ...1864 |
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Zadetki 1–5 od 99
Stran xiii
... less duration in deep water , they return as maties to the shallows and lochs , there to run through the same changes as before . The commission- ers were unable to gain any information respecting the time which one and the same herring ...
... less duration in deep water , they return as maties to the shallows and lochs , there to run through the same changes as before . The commission- ers were unable to gain any information respecting the time which one and the same herring ...
Stran 17
... less than 300 tons of organic matter , ' which in this case is the scientific term of filth . The result , as a matter of course , has been that in the summer months the stench from the river has occasionally been intolerable . In 1857 ...
... less than 300 tons of organic matter , ' which in this case is the scientific term of filth . The result , as a matter of course , has been that in the summer months the stench from the river has occasionally been intolerable . In 1857 ...
Stran 19
... by pursuing this mode of construction , a vessel would not only be very much less liable to injury by collision with a ram , but if carefully and scientifically fitted , might be overrun by an adversary , MECHANICS AND USEFUL ARTS . 19.
... by pursuing this mode of construction , a vessel would not only be very much less liable to injury by collision with a ram , but if carefully and scientifically fitted , might be overrun by an adversary , MECHANICS AND USEFUL ARTS . 19.
Stran 23
... less difficulty than steel ; tar- nishes less readily than any metal usually employed for astronomical instruments , and is less affected by changes of temperature than either gun - metal or brass . " This latter quality is especially ...
... less difficulty than steel ; tar- nishes less readily than any metal usually employed for astronomical instruments , and is less affected by changes of temperature than either gun - metal or brass . " This latter quality is especially ...
Stran 24
... less in damp air than common iron nails , or even copper ones . To manufacture them , very hot metal is run into ordinary sand moulds . These malleable iron nails are very brittle before being placed in the annealing furnace . Their ...
... less in damp air than common iron nails , or even copper ones . To manufacture them , very hot metal is run into ordinary sand moulds . These malleable iron nails are very brittle before being placed in the annealing furnace . Their ...
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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.