The American Journal of Science and Arts, Volumen6S. Converse, 1848 |
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Página 60
... crystals belonging to the rhombic system . In picrosmine the obtuse angles of the rhombic prism are very nearly 127 ° , in monradite 130 ° , and in talc 120 ° . The rhombic prism of monradite and of picrosmine agrees also very nearly ...
... crystals belonging to the rhombic system . In picrosmine the obtuse angles of the rhombic prism are very nearly 127 ° , in monradite 130 ° , and in talc 120 ° . The rhombic prism of monradite and of picrosmine agrees also very nearly ...
Página 65
... crystal- line form is a hexagonal prism , with a cleavage parallel to the terminal plane . Chlorite , ripidolite , pennine and the other chlorite minerals treated of here , all receive , as is seen above , formulæ consisting of two ...
... crystal- line form is a hexagonal prism , with a cleavage parallel to the terminal plane . Chlorite , ripidolite , pennine and the other chlorite minerals treated of here , all receive , as is seen above , formulæ consisting of two ...
Página 66
... crystal- lize in the rhombic system . But it does not seem probable to me that they should affect precisely similar forms , inasmuch as the amount of potash contained in pinite is too considerable for that . 11. Pinite from Penig ...
... crystal- lize in the rhombic system . But it does not seem probable to me that they should affect precisely similar forms , inasmuch as the amount of potash contained in pinite is too considerable for that . 11. Pinite from Penig ...
Página 69
... S 2 ( R ) Si2 + R Si3 . . * Or at least apparently so . Some of these minerals consist perhaps of an ag gregation of microscopic crystals . The analysis showed however a loss of 2.24 . The Scheerer on Isomorphism . 69.
... S 2 ( R ) Si2 + R Si3 . . * Or at least apparently so . Some of these minerals consist perhaps of an ag gregation of microscopic crystals . The analysis showed however a loss of 2.24 . The Scheerer on Isomorphism . 69.
Página 114
... crystals form solid masses , which are allowed to increase , till one - half the bulk of the fluid has assumed the solid state , when the remaining liquor is rapidly removed , the crystals broken up and washed with some acid resulting ...
... crystals form solid masses , which are allowed to increase , till one - half the bulk of the fluid has assumed the solid state , when the remaining liquor is rapidly removed , the crystals broken up and washed with some acid resulting ...
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Términos y frases comunes
absorption according Algæ allantoin alumina analysis animals appears Archipelago atmosphere atoms bodies carbonic acid cent chlorite color compounds contains copper Copper Harbor cordierite corresponding cretaceous crystals decomposition deposits ethereo-ponderable exist experiments fact feet formula fossils geological gold Green gutta percha heat hornblende hydrate hydrochloric acid hydrogen inches Key West lake latter lime limestone liquid magnesia magnetic mass means memoir mercury metal meteoric mica miles mineral mountains nearly nitric acid observed obtained olivine oxyd oxygen oxygen ratio piculs plant plates polarization portion potash potassa precipitate present pressure produced Prof protoxyd of iron quantity remarkable river rocks salt sandstone SECOND SERIES serpentine silicate soda solution species specimens steam stone substance sulphate sulphuric acid surface tellurium temperature tion tube uric acid vapor vegetation vivianite volume waves wind Yellow
Pasajes populares
Página 288 - LITERATURE AND THE FINE ARTS. 9. Modern literature. 10. The fine arts, and their application to the useful arts. 11. Bibliography. 12. Obituary notices of distinguished individuals.
Página 94 - And the poor beetle that we tread upon, In corporal sufferance finds a pang as great As when a giant dies.
Página 288 - Ethnological researches, particularly with reference to the different races of men in North America; also, explorations and accurate surveys of the mounds and other remains of the ancient people of our country.
Página 286 - To INCREASE KNOWLEDGE. It is proposed — 1. To stimulate men of talent to make original researches, by offering suitable rewards for memoirs containing new truths ; and, 2. To appropriate annually a portion of the income for particular researches, under the direction of suitable persons.
Página 288 - DETAILS OF THE PLAN FOR DIFFUSING KNOWLEDGE. I. By the publication of a series of reports, giving an account of the new discoveries in science, and of the changes made from year to year in all branches of knowledge not strictly professional. 1. These reports will diffuse a kind of knowledge generally interesting, but which, at present, is inaccessible to the public. Some of the reports may be published annually, others at longer intervals, as the income of the institution, or the changes in the branches...
Página 288 - ... are to be prepared by collaborators eminent in the different branches of knowledge. 3. Each collaborator to be furnished with the journals and publications, domestic and foreign, necessary to the compilation of his report; to be paid a certain sum for his labors, and to be named on the title-page of the report. 4. The reports to be published in separate parts, so that persons interested in a particular branch can procure the parts relating to it without purchasing the whole. 5. These reports...
Página 288 - The following are some of the subjects which may be embraced in the reports. I. PHYSICAL CLASS. 1. Physics, including astronomy, natural philosophy, chemistry, and meteorology. 2. Natural history, including botany, zoology, geology, &c. 3. Agriculture. 4. Application of science to arts. II. MORAL AND POLITICAL CLASS. 5. Ethnology, including particular history, comparative philology, antiquities, &c.
Página 329 - If any point be taken in the diameter of a circle which is not the centre, of all the straight lines which can be drawn from it to the circumference, the greatest is that in which the centre is, and the other part of that diameter is the least...
Página 289 - With reference to the collection of books, other than those mentioned above, catalogues of all the different libraries in the United States should be procured, in order that the valuable books first purchased may be such as are not to be found in the United States.
Página 379 - The valley is generally about twenty miles wide, and bordered on the east and west by mountain chains, continuations of the Rocky Mountains, which have received here different names, as Sierra Blanca, de los Organos, Oscura, on the eastern side, and Sierra do los Grullas, de Acha, de loi Mimbres, towards the west.