"Geographical area" Quotes from Famous Books
 ... modification implies slow and gradual change of one species into another, and progressively still more slow and gradual changes of one genus, family, or order into another genus, family, or order, we should expect on this theory that the organic types living on any given geographical area would be found to resemble or to differ from organic types living elsewhere, according as the area is connected with or disconnected from other geographical areas. For instance, the large continental ...
— Darwin, and After Darwin (Vol. 1 and 3, of 3) • George John Romanes |
