Annual of Scientific Discovery: Or, Year-book of Facts in Science and Art for ...1864 |
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Pagina iv
... plants , so in the intellectual world fitness of time and circumstance promptly calls forth appropriate devices . The seeds of invention ex- ist , as it were , in the air , ready to germinate whenever suitable con- ditions arise , and ...
... plants , so in the intellectual world fitness of time and circumstance promptly calls forth appropriate devices . The seeds of invention ex- ist , as it were , in the air , ready to germinate whenever suitable con- ditions arise , and ...
Pagina viii
... plants in India must be regarded as a subject of the highest importance , not merely to the prosperity of India , but indirectly to the whole world ; as the exploration and civilization of many tropi- cal countries by Europeans is ...
... plants in India must be regarded as a subject of the highest importance , not merely to the prosperity of India , but indirectly to the whole world ; as the exploration and civilization of many tropi- cal countries by Europeans is ...
Pagina xi
... plant and the animal , and many more new oils and fats not known in nature . Berthelot has acted upon gly- cerine by putrefying animal matter , and obtained artificially grape sugar ; and has converted oil of turpentine into ordinary ...
... plant and the animal , and many more new oils and fats not known in nature . Berthelot has acted upon gly- cerine by putrefying animal matter , and obtained artificially grape sugar ; and has converted oil of turpentine into ordinary ...
Pagina 31
... plants , washed up on the shores in the vicinity of the Cape of Good Hope , South Africa , but principally from the ... plant by cleaning it first with weak caustic MECHANICS AND USEFUL ARTS . 31.
... plants , washed up on the shores in the vicinity of the Cape of Good Hope , South Africa , but principally from the ... plant by cleaning it first with weak caustic MECHANICS AND USEFUL ARTS . 31.
Pagina 32
... plant by cleaning it first with weak caustic alkali , and then with dilute sulphuric acid , after which it is washed , and before it is quite dry it may be pressed into sheets or any other form . It then may be rendered very hard by ...
... plant by cleaning it first with weak caustic alkali , and then with dilute sulphuric acid , after which it is washed , and before it is quite dry it may be pressed into sheets or any other form . It then may be rendered very hard by ...
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.