. Darwin, and after Darwin. An exposition of the Darwinian theory and a discussion of post-Darwinian questions. Evolution; Heredity. Introductory. 19 disconnected forms were described as distinct species : but as soon as the connecting forms were found— showing a progressive modification from the older to the newer beds —the whole were included as varieties of one species. Fig. I.—Successive forms of Paludina, from the Tertiary deposits of Slavonia (after Neumayr). Of course, other cases of the same kind might be adduced, and therefore, as just remarked, in their work of naming species natural
. Darwin, and after Darwin. An exposition of the Darwinian theory and a discussion of post-Darwinian questions. Evolution; Heredity. Introductory. 19 disconnected forms were described as distinct species : but as soon as the connecting forms were found— showing a progressive modification from the older to the newer beds —the whole were included as varieties of one species. Fig. I.—Successive forms of Paludina, from the Tertiary deposits of Slavonia (after Neumayr). Of course, other cases of the same kind might be adduced, and therefore, as just remarked, in their work of naming species naturalists may only have been marking out the cases where intermediate forms c 2. Please note that these images are extracted from scanned page images that may have been digitally enhanced for readability - coloration and appearance of these illustrations may not perfectly resemble the original Romanes, George John, 1848-1894. Chicago The Open Court Pub. Co
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