The American Journal of Science and ArtsS. Converse, 1850 |
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acid and bases action alumina American ammonia analysis angle animals appears atomic volume atomic weight atoms of acid atoms of elements barometer baryta carbonate carbonic acid chlorid chord Chrysoberyl color compounds contains copper corundum crystals diameter dike distance emery Epidote equal experiments feet feldspar force formula fossil galvanometer genus gives heat inches instrument iron isomorphous Lake lava lime limestone longitude magnesia magnetic mass metallic mica miles mineral mountain natural nearly nitric acid observed obtained organ oxyd perfect peroxyd plants plate portion potash present prime meridian prism produced Prof protoxyd quantity quartz ratio remarkable ridge river rocks rutile salts sandstone scale Scapolite SECOND SERIES side silica soda soluble solution species specimens Spodumene strontia substance sulphate sulphuric acid summit surface temperature tion trace trap valleys veins velocity wire zinc
Popularne fragmenty
Strona 306 - Report of a Geological Survey of Wisconsin, Iowa and Minnesota; and incidentally of a portion of Nebraska Territory; made under instructions from the United States Treasury Department. By David Dale Owen, United States Geologist.
Strona 326 - It will be observed that this argument rests entirely on the assumption that varieties occurring in a state of nature are in all respects analogous to or even identical with those of domestic animals, and are governed by the same laws as regards their permanence or further variation. But it is the object of the present paper to show that this assumption is altogether false...
Strona 309 - ANNUAL OF SCIENTIFIC DISCOVERY ; or, Year Book of Facts in Science and Art...
Strona 358 - Finally, it plunged into the sea, with loud detonations. The burning lava, on meeting the waters, was shivered, like melted glass, into millions of particles, which were thrown up in clouds, that darkened the sky, and fell like a storm of hail over the surrounding country.
Strona 395 - Let P be the point of equal attraction between any planet and the one next interior, the two being in conjunction ; P', that between the same and the one next exterior. Let also D = the sum of the distances of the points P, P...
Strona 351 - ... and the amphitheatre of rocks around the lower depths, were brightly illumined from the boiling lavas; while a lurid red tinged the distant parts of the inclosing walls and threw into deeper shades of darkness the many cavernous recesses.
Strona 358 - ... from ten to two hundred feet, according to the inequalities of the surface over which it passed. During the flow, night was converted into day on all eastern Hawaii. The light rose and spread like the morning upon the mountains, and its glare was seen on the opposite side of the island. It was also distinctly visible for more than one hundred miles at sea; and at the distance of forty miles fine print could be read at midnight.
Strona 302 - In these experiments, the sugar dissolved in water, containing bisulphite of lime in excess, was boiled, and then left to evaporate, sometimes after being filtered, sometimes without any filtration at all. From the experiments which M. Melsens has made with bisulphite of lime, it is probable that if a cold solution of this salt were to be poured on the sugar-cane grinder, so as to mix with the juice the moment it is expressed from the cane, the sugar might be kept for some time, and might be exposed...
Strona 353 - ... leave. So much like life they looked that they at first supposed them merely at rest, and it was not until they had come up to them and handled them that they could detect their mistake.
Strona 203 - I have obtained action with the iron ; but in those cases the action was far less than if the iron were applied outside between the horseshoe magnet and the needle, or to the needle alone, the magnets being entirely away. On using a garnet, or a weak magnetic substance of any kind, I cannot find that the arrangement is at all comparable for readiness of indication or delicacy, with the use of a common or an astatic needle, and therefore I do not understand how it could become a test of the polarity...