American Journal of Science and Arts, Volumen54Kline Geology Laboratory, Yale University., 1847 |
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Página iv
... obtained in Australia ; by JAMES D. DANA , 151 . NUMBER XI . Page . ART . XIII . - On the Destruction and partial Reproduction of For . ests in British North America ; by JOHN WILLIAM DAWSON , Esq . of Pictou , 161 171 XIV . Review of ...
... obtained in Australia ; by JAMES D. DANA , 151 . NUMBER XI . Page . ART . XIII . - On the Destruction and partial Reproduction of For . ests in British North America ; by JOHN WILLIAM DAWSON , Esq . of Pictou , 161 171 XIV . Review of ...
Página 4
... obtained inferentially from the physical theory of terrestrial magnetism which has been briefly explained : but for our present purpose , they may be re- garded as mere assumptions , to be tested by the conclusions and results to which ...
... obtained inferentially from the physical theory of terrestrial magnetism which has been briefly explained : but for our present purpose , they may be re- garded as mere assumptions , to be tested by the conclusions and results to which ...
Página 9
... obtain the force due to the arc pA , the two integrals will become two functions of Pp and PA . Now , for any supposed value of Pp , PA will be the same at every different place on the earth , and therefore the values of these integrals ...
... obtain the force due to the arc pA , the two integrals will become two functions of Pp and PA . Now , for any supposed value of Pp , PA will be the same at every different place on the earth , and therefore the values of these integrals ...
Página 12
... obtained by solving the two spherical triangles ACB , A'CB . The latitude and longitude of the place B , and the latitudes and longitudes of the two poles A and A ' being given , we readily find CB , AC , and A'C , and the angles ACB ...
... obtained by solving the two spherical triangles ACB , A'CB . The latitude and longitude of the place B , and the latitudes and longitudes of the two poles A and A ' being given , we readily find CB , AC , and A'C , and the angles ACB ...
Página 18
... obtained subsistence in a country like the southern part of Siberia where trees abound , notwithstanding it is covered during a great part of the year with snow , seeing that the leafless state of such trees during even a long and ...
... obtained subsistence in a country like the southern part of Siberia where trees abound , notwithstanding it is covered during a great part of the year with snow , seeing that the leafless state of such trees during even a long and ...
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action alcohol ammonia angle animal appear axes baryta beak beds benzoic acid bodies boiling carbonic acid cent character chemical chlorid cleavage color columbite compounds contains copper crystals cyanuric acid deposits determined direction dissolved distance earth elements eocene equal equivalent error ether experiments fact feet force formula fossil genus glycocoll gun-cotton Gutta Percha heat hippuric acid hydrochloric acid hydrogen inches intensity iron Lake latitude length less light liquid magnetic manganese mass matter meridian metal miles molecules muscular impression nature nearly needle nitric acid observed obtained organic oxyd oxygen particles plane plants platinum poles portion posterior potash present produced Prof quantity remarkable river rock salt sandstone Schk SECOND SERIES side solution species specimens strata structure substance sulphate sulphuretted sulphuric acid surface temperature thickness tion trap trees vegetable vertebra vertical wire
Pasajes populares
Página 425 - ... we could plainly see that all about the trapezium is a mass of stars ; the rest of the nebula also abounding with stars and exhibiting the characteristics of resolvability strongly marked.
Página 445 - The full-grown condor measures, from the point of the beak to the end of the tail, from...
Página 400 - Among writers on optics, it has been a desideratum to obtain an artificial light of standard brilliancy. The preceding experiments furnish an easy means of supplying that want, and give us what might be termed a "unit-lamp.
Página 125 - Yet the attempt to explain, by the Cuvierian principles, the facts of special homology on the hypothesis of the subserviency of the parts so determined to similar ends in different animals...
Página 17 - But we may readily believe that any one cognisant of the food of the elk, might be likely to have suspected cryptogamic vegetation to have entered more largely into the food of a still more northern species of the deer tribe. And I can by no means subscribe to another proposition by the same eminent naturalist, that 'the kind of food which the existing species of elephant prefers, will not enable us to determine, or even to offer a probable conjecture concerning that of the extinct species.
Página 444 - Agaricus, and was told that it grew abundantly in the neighbourhood, on the decaying leaves of a dwarf palm. Next day I obtained a great many specimens, and found them to vary from one to two and a half inches across.
Página 148 - This is a useful compendium of all that description of information which is valuable to the modern gardener. It quotes largely from the best standard authors, journals. and transactions of societies; and the labours of the American editor have fitted it for the United States, by judicious additions and omissions.
Página 285 - On that evening, Mr. Morgan, at my request, made a drawing of the form, which on comparison coincided very closely with a drawing made independently by myself. The ratio of the diameter of the Ring to that of the Planet, as measured from the drawings, is about that of 3 to 2. The angle made by the axis of the Ring with a parallel of declination, in • the south-preceding or north-following quarter, I estimated at 60'.
Página 445 - Cordillera that bird builds its nest, and hatches its young in the months of April and May. Few animals have attained so universal a celebrity as the condor. That bird was known in Europe at a period when his native land was numbered among those fabulous regions which are regarded as the scenes of imaginary wonders. The most extravagant accounts of the condor were written and read, and general credence was granted to every story which travellers brought from the fairy land of gold and silver.
Página 252 - Boston, in January, 1847, with the news of the scarcity in Great Britain, Ireland, and other parts of Europe, and with heavy orders for agricultural produce, the farmers in the interior of the state of New York, informed of the state of things by the magnetic telegraph, were thronging the streets of Albany with innumerable team-loads of grain almost as quickly after the arrival of the steamer at Boston as the news of that arrival could ordinarily have reached them.