 | David Josiah Brewer - 1900 - 476 pages
...and the progress of physical geography has laid such a broad foundation for researches of this kind. Then we may learn with more precision how far the...isolated specimens are founded in nature, or how far they may be only a particular stage of growth of other species; then we shall know, what is yet too little... | |
 | David Josiah Brewer - 1902 - 474 pages
...and the progress of physical geography has laid such a broad foundation for researches of this kind. Then we may learn with more precision how far the...isolated specimens are founded in nature, or how far they may be only a particular stage of growth of other species; then we shall know, what is yet too little... | |
 | Mary P. Winsor - 1991 - 345 pages
...how far the species described from isolated specimens are founded in nature, or how far they may be only a particular stage of growth of other species;...yet too little noticed, how extensive the range of variations is among animals observed in their wild state, or rather, how much individuality there is... | |
 | Mary P. Winsor - 1991 - 348 pages
...outlined by Louis Agassiz before 1859. We need, he had written in the "Essay on Classification," to learn with more precision, how far the species described...isolated specimens are founded in nature, or how far they may be only a particular stage of growth of other species; then we shall know what is yet too little... | |
 | Louis Agassiz, Edward Lurie - 2004 - 308 pages
...and the progress of Physical Geography has laid such a broad foundation for researches of this kind. Then we may learn with more precision how far the...isolated specimens are founded in nature, or how far they may be only a particular stage of growth of other species; then we shall know what is yet too little... | |
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... would be highly desirable that naturalists should turn again their attention that way, now that comparative anatomy and physiology, as well as embryology, may suggest so many new topics of inquiry, and the progress of physical geography has laid such... 