Annual of Scientific Discovery: Or, Year-book of Facts in Science and Art for ...1864 |
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Pagina 17
... give more than an outline of this great plan , which may best be briefly described as consisting of three gigan- tic main tunnels or sewers on each side of the river . These completely divide underground London , from west to east , and ...
... give more than an outline of this great plan , which may best be briefly described as consisting of three gigan- tic main tunnels or sewers on each side of the river . These completely divide underground London , from west to east , and ...
Pagina 28
... give the amount of oxygen required for illuminating purposes ; i . e . to obtain one part of oxygen four feet of air would be needed , as three feet would be nitrogen . Now , the great difficulty in using air as a substitute for pure ...
... give the amount of oxygen required for illuminating purposes ; i . e . to obtain one part of oxygen four feet of air would be needed , as three feet would be nitrogen . Now , the great difficulty in using air as a substitute for pure ...
Pagina 30
... gives the slope in terms of the distance apart of the feet ( metres or yards ) . If you want to establish a given slope , set the foot to the indicated point of the scale , and adjust your plane to the instrument . The lower bar of the ...
... gives the slope in terms of the distance apart of the feet ( metres or yards ) . If you want to establish a given slope , set the foot to the indicated point of the scale , and adjust your plane to the instrument . The lower bar of the ...
Pagina 34
... gives it a degree of lightness which increases the bulk 25 per cent . over ordinary gunpowder , —a great advantage for blasting purposes . Plaster of Paris , Roman or Portland cement , or other strong cementing substance , may be used ...
... gives it a degree of lightness which increases the bulk 25 per cent . over ordinary gunpowder , —a great advantage for blasting purposes . Plaster of Paris , Roman or Portland cement , or other strong cementing substance , may be used ...
Pagina 36
... give support and prevent the composition from falling when the alum melts . The proportion of alum is about one quarter of the whole . This would give of water from the compo- sition , at 2120 , only five per cent . , and at 250 ...
... give support and prevent the composition from falling when the alum melts . The proportion of alum is about one quarter of the whole . This would give of water from the compo- sition , at 2120 , only five per cent . , and at 250 ...
Overige edities - Alles bekijken
Annual of Scientific Discovery: Or, Year-book of Facts in Science and Art ... Volledige weergave - 1859 |
Annual of Scientific Discovery: Or, Year-book of Facts in Science and Art ... Volledige weergave - 1852 |
Annual of Scientific Discovery: Or, Year-book of Facts in Science and Art ... Volledige weergave - 1858 |
Veelvoorkomende woorden en zinsdelen
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
Populaire passages
Pagina 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,'...
Pagina 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...
Pagina 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.
Pagina 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.
Pagina 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.