 | Alfred Russel Wallace - 1876 - 704 lehte
...resulting geographical distribution is almost the opposite of what might have been expected, — the former being, on the whole, less distinctly localized...volumes may lead to a more systematic collection and arrangement of the necessary facts. At present all public museums and private collections are arranged... | |
 | Mark V. Lomolino, Dov F. Sax, James H. Brown - 2004 - 1284 lehte
...[PAST zv. hardly be determined with any definitenesa On continents they seem to spread steadily, bat slowly, in every direction, checked probably by organic...volumes may lead to a more systematic collection and arrangement of the necessary facts. At present all public museums and private collections are arranged... | |
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... the latter. CONCLUSION. The preceding remarks are all I now venture to offer, on the distinguishing features of the various groups of land-animals as regards their distribution and migrations. They are at best but indications of the various lines... 