 | Alfred Russel Wallace - 1871 - 490 lehte
...priori arguments against its probability. Geological Distribution of the Forms of Life. The phaenomena of geological distribution are exactly analogous to...degree, what species could and did appear at a given epoeh, may, it is hoped, be considered as one step in the right direction towards a complete solution... | |
 | Samuel Taylor Coleridge - 1895 - 364 lehte
...as the Cartesians say) of Fear, Hope, Rage, Shame, and (strangest of all) Remorse, form at present the most difficult, and at the same time the most interesting problem of psychology, and are intimately connected with prudential morals, the science, that is, of morals... | |
 | American Association for the Advancement of Science - 1898 - 768 lehte
...In theoretical geology. New York, 1837. p. 817. Quoted by Woodworth, p. HO. "To discover," he says, "how the extinct species have from time to time been...interesting problem in the natural history of the earth."' Still more recently2 he remarks : " Whenever the physical or organic conditions change to however small... | |
 | 1898 - 510 lehte
...times, in an essay published in 1855, to call attention to this subject thus : "To discover," he says, "how the extinct species have from time to time been...interesting problem in the natural history of the earth."* Still more recently4 he remarks: " Whenever the physical or organic conditions change, to however small... | |
 | American Association for the Advancement of Science - 1898 - 764 lehte
...1837. p. 217. Quoted by Woodworth, p. MO. 'Principles of Geology. 1830-'3'2. "To discover," he says, "how the extinct species have from time to time been...interesting problem in the natural history of the earth."1 Still more recently2 he remarks : " Whenever the physical or organic conditions change to... | |
 | American Association for the Advancement of Science - 1898 - 768 lehte
...1837. p. 217. Quoted by Woodworth, p. MO. « Principles of Geology. 1830-'S2. "To discover," he says, "how the extinct species have from time to time been...interesting problem in the natural history of the earth."1 Still more recently3 he remarks : " Whenever the physical or organic conditions change to... | |
 | 1898 - 1094 lehte
...times, in an essay published in 1855, to call attention to this subject thus : "To discover," he says, "how the extinct species have from time to time been...interesting problem in the natural history of the earth."3 Still more recently 4 he remarks : " Whenever the physical or organic conditions change, to... | |
 | American Association for the Advancement of Science - 1898 - 766 lehte
...' Principles of Geology. 1830-'32. "To discover," he says, "how the extinct species have from lime to time been replaced by new ones down to the very...interesting problem in the natural history of the earth."1 Still more recently2 he remarks : " Whenever the physical ororjranic conditions change to... | |
 | American Association for the Advancement of Science - 1898 - 762 lehte
...' Principles of Geology. 1830-'32. "To discover," he says, "how the extinct species have from lime to time been replaced by new ones down to the very...interesting problem in the natural history of the earth."1 Still more recently9 he remarks : " Whenever the physical ororjranic conditions change to... | |
 | American Association for the Advancement of Science - 1898 - 772 lehte
...call attention to this subject thus : "To discover," he says, "how the extinct species have from lime to time been replaced by new ones down to the very...interesting problem in the natural history of the earth."1 Still more recently9 he remarks : " Whenever the physical or organic conditions change to... | |
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how the extinct species have from time to time been replaced by new ones down to the very latest geological period, is the most difficult, and at the same time the most interesting problem in the natural history of the earth... 
