The American Journal of Science and ArtsS. Converse, 1865 |
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Druge izdaje - Prikaži vse
Pogosti izrazi in povedi
action alcohol alkaline alumina amalgam ammonia amount amyl amylic alcohol analysis appears atmosphere baryta beds benzole bodies boiling boiling-point carbonic acid Carboniferous chemical chlorid chlorid of calcium Coal-measures color contained crystals cuminic currents decomposed density deposits determined direction distance distillation earth experiments feet force formation fossils fractional distillation fractions geological gravity heat hydrogen inches iodid iron JOUR Journal Lake light lime limestone lines liquid magnesia magnetic mass matter means memoir mercury metastannate mineral mixture molecules motion naphtha nearly nebula observations obtained orbit oxyd planets plate polarization portion potash prairies precipitated present prism probably produced Prof quantity remarkable retort ring river rocks rotation saline salt schists SCI.-SECOND SERIES seen separated side silicate Silurian sodium sodium amalgam solar soluble solution species specific gravity spectrum springs stannate stars strata Struve substance sulphate sulphuric acid surface temperature tion tube vapor velocity
Priljubljeni odlomki
Stran 256 - That gravity should be innate, inherent, and essential to matter, so that one body may act upon another at a distance through a vacuum, without the mediation of anything else, by and through which their action and force may be conveyed from one to. another, is to me so great an absurdity that I believe no man, who has iu philosophical matters a competent faculty of thinking, can ever fall into it.
Stran 232 - ... hydro-carbons. The water, which is purposely introduced at the bottom of the arrangement, is first vaporized by the heat, and then decomposed by the ignited fuel, and re-arranged as hydrogen and carbonic oxide ; and only the ashes of the coal are removed as solid matter from the chamber at the bottom of the fire-bars. " These mixed gases form the gaseous fuel. The nitrogen, which entered with the air at the grate, is mingled with them, constituting about a third of the whole volume. The gas rises...
Stran 220 - Edited, with an Introduction and Brief Biographical Notices of the Chief Promoters of the New Views, by EDWARD L. YOUMANS, MD 12mo.
Stran 207 - ... earth is traversing in its orbit about the sun, there are as many as 13,000 small bodies, each body such as would furnish a shooting star, visible under favorable circumstances to the naked eye.
Stran 232 - ... down it is a solid plate, and for the rest of the distance consists of strong horizontal plate bars where air enters, the whole being at an inclination such as that which the side of a heap of coals would naturally take. Coals are poured, through openings above, upon this combination of wall and grate, and being fired at the under surface they burn at the place where the air enters; but as the layer of coal is from...
Stran 338 - ... first indication of choking of the worm is a partial or entire stoppage of the stream of liquid which normally flows steadily from the end of the worm into the retort. Any interruption or unsteadiness of this flow would indicate too rapid ebullition. As a rule, other things being equal, the greater the difference between the temperature of the bath and that of the retort, the slower the products will come off, and the more effectual will be the separation. I think it possible, however, that the...
Stran 103 - There is no more reason to think that species have been specially endowed with various degrees of sterility to prevent them crossing and blending in nature, than to think that trees have been specially endowed with various and somewhat analogous degrees of difficulty in being grafted together in order to prevent them becoming inarched in our forests.
Stran 24 - Volcanoes, insisted on the important part which water plays in an eruption, when intimately mixed up with the component materials of lava, aiding, as he supposed, in giving mobility to the more solid materials of the fluid mass. But when advocating this igneo-aqueous theory, he never dreamt of impugning the Huttonian doctrine as to the intensity of heat which the production of the unstratified rocks, those of the plutonic class especially implies.
Stran 232 - ... about halfway down it is a solid plate, and for the rest of the distance consists of strong horizontal plate bars where air enters; the whole being at an inclination such as that which the side of a heap of coals would naturally take. Coals are poured, through openings above, upon this combination of wall and grate, and being fired at the...
Stran 78 - Subsequent observations on other nebulae* induced him " to regard this faint spectrum as due to the solid or liquid matter of the nucleus, and as quite distinct from the bright lines into which nearly the whole of the light...