A Century of Science in America: With Special Reference to the American Journal of Science, 1818-1918 |
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Academy Agassiz American geology American Journal animals appeared Asa Gray atomic weights Benjamin Silliman Berzelius biological botany Cambrian chemical chemist chemistry connection contributions Cretaceous crust Dana deposits described discovery early earth editor Edward Hitchcock electric electromagnetic elements embryology erosion ether Europe evolution experimental exploration fact faunas field formations fossils Geol geological Geological Survey geologists glacial glaciers granite groups heat Hitchcock igneous rocks important interest investigation Journal of Science knowledge known laboratory land later Louis Agassiz magnetic Marsh metamorphic methods mineralogy minerals motion mountain Museum natural history nineteenth century observed Ordovician organic origin paleontology Paleozoic papers period Permian petrography phenomena physical present principle Professor progress publication published recent regard region relations remarkable scientific sediments showed Silliman Silurian Society species strata structure temperature Tertiary theory tion to-day Triassic United valleys vertebrates volume Yale Yale College zoology
Popular passages
Page 403 - PRINCIPLES OF ZOOLOGY; Touching the Structure, Development, Distribution, and Natural Arrangement, of the RACES OF ANIMALS, living and extinct, with numerous Illustrations. For the use of Schools and Colleges.
Page 210 - That this officer shall have the direction of the geological survey and the classification of the public lands and examination of the geological structure, mineral resources, and products of the national domain.
Page 345 - It is impossible for a self-acting machine, unaided by any external agency, to convey heat from one body to another at a higher temperature ; or heat cannot of itself (that is, without compensation) pass from a colder to a warmer body.
Page 137 - ... country south, and imagine this whole mass converted by earthquake pulsations of the breadth which such undulations have, into a series of stupendous and rapidmoving waves of translation, helped on by the still more rapid flexures of the floor over which they move, and then advert to the shattering and loosening power of the tremendous jar of the earthquake, we shall have an agent adequate in every way to produce the results we see, to float the northern ice from its moorings, to rip off, assisted...
Page 132 - ... high banks, imbedded in strata, or scattered, occasionally, in profusion, on the face of almost every region, and sometimes on the tops and declivities of mountains, as well as in the...
Page 381 - This characteristic of modern experiments that they consist principally of measurements, - is so prominent, that the opinion seems to have got abroad, that in a few years all the great physical constants will have been approximately estimated, and that the only occupation which will then be left to men of science will be to carry on these measurements to another place of decimals.
Page 198 - ... invalid) of the same act, hundreds of leases were granted to speculators in the Lake Superior copper region, which was, from 1843 to 1846, the scene of wild and baseless excitement. The bubble burst during the latter year; the issue of permits and leases was suspended as illegal, and the act of 1847, authorizing the sale of the mineral lands, and a geological survey of the district, laid the foundation of a more substantial prosperity.
Page 387 - While one vessel has been lying-to in a heavy gale of wind, another, not more than thirty leagues distant, has at the very same time been in another gale equally heavy, and lying-to with the wind in quite an opposite direction.
Page 395 - American naturalists whose writings were published toward the end of the eighteenth century and at the beginning of the nineteenth the...
Page 405 - I did not then know how much more important it is to the naturalist to understand the structure of a few animals, than to command the whole field of scientific nomenclature. Since I have become a teacher, and have watched the progress of students, I have seen that they all begin in the same way ; but how many have grown old in the pursuit, without ever rising to any higher conception of the study of nature, spending their life in the determination of species, and in extending scientific terminology...