The American Journal of Science and Arts

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S. Converse, 1860
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The Great Auroral Exhibition of August 28th to Septem
On Numerical Relations existing between the Equivalent
Remarks on the Dissolution of Field Ice by Chas Whit
Chemistry and Physics On Platinum and the metals which accompany it 113 Blow
Oeology Review On some points in the Geology of the Alps 118 The Geological
Total Solar
New Books Archaia or Studies of the Cosmogony and Natural History of the Hebrew
Forces by Theodore Lyman
Gulf Stream ExplorationsThird Memoir Distribution
On the Chemical Composition of Pectolite by J D Whitney
Abstract of a Meteorological Journal kept at Marietta
Correspondence of Mr Jerome NicklksBiography
Technical Chemistry Vegetable ParchmentPapyrine 278 Weighing of Moist Pre
Zoology On Botanical and Zoological Nomenclature by Wu Stimpson 289 Les gen
Mr Alvan Clarks
On the Coloring Matter of the Privet and its applica
Report of Assistant Charles A Schott on the latest
Caricography by Prof C Dewey
Ornithichnites or tracks resembling those of Birds
Theoretical Determination of the Dimensions of
Geographical Notices by Daniel C Gilman No XII
Correspondence of Prof Jerome Nickles French
Description of an Equatorial recently erected at Hope
Chemistry and Physics On Fraunhofers Lines Kirchoff 423 On the direct conver
Geology Notes on the Geology of Nebraska and Utah Territory by Dr F V Hayden
Meteorology and Astronomy Abstract of Meteorological Observations at Sacramento
Proceedings of Societies 454

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Page 176 - I cannot doubt that the theory of descent with modification embraces all the members of the same great class or kingdom. I believe that animals are descended from at most only four or five progenitors, and plants from an equal or lesser number.
Page 148 - As all the living forms of life are the lineal descendants of those which lived long before the Cambrian epoch, we may feel certain that the ordinary succession by generation has never once been broken, and that no cataclysm has desolated the whole world. Hence we may look with some confidence to a secure future of great length. And as natural selection works solely by and for the good of each being, all corporeal and mental endowments will tend to progress towards perfection.
Page 147 - Judging from the past, we may safely infer that not one living species will transmit its unaltered likeness to a distant futurity. And of the species now living very few will transmit progeny of any kind to a far distant futurity...
Page 158 - The limbs divided into great branches, and these into lesser and lesser branches, were themselves once, when the tree was...
Page 170 - There is no exception to the rule that every organic being naturally increases at so high a rate that, if not destroyed, the earth would soon be covered by the progeny of a single pair.
Page 170 - Nothing is easier than to admit in words the truth of the universal struggle for life, or more difficult — at least I have found it so — than constantly to bear this conclusion in mind.
Page 174 - But if variations useful to any organic being ever do occur, assuredly individuals thus characterised will have the best chance of being preserved in the struggle for life ; and from the strong principle of inheritance, these will tend to produce offspring similarly characterised. This principle of preservation, or the survival of the fittest, I have called Natural Selection.
Page 159 - ... in a fossil state. As we here and there see a thin straggling branch springing from a fork low down in a tree...
Page 449 - THE BOYDEN PREMIUM URIAH A. BOYDEN, ESQ., of Boston, Mass., has deposited with THE FRANKLIN INSTITUTE the sum of one thousand dollars, to be awarded as a premium to "Any resident of North America who shall determine by experiment whether all rays of light,* and other physical rays, are or are not transmitted with the same velocity.
Page 158 - The green and budding twigs may represent existing species ; and those produced during former years may represent the long succession of extinct species. At each period of growth all the growing twigs have tried to branch out on all sides, and to overtop and kill the surrounding twigs and branches, in the same manner as species and groups of species have at all times overmastered other species in the great battle for life.

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