Eugenio Rignano Upon the Inheritance of Acquired Characters a Hypothesis of Her
Eugenio Rignano Upon the Inheritance of Acquired Characters a Hypothesis of Her
Eugenio Rignano
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XXXVII ; Drittes Heft. Bonn, Cohen 1891 ; especially P. 403 405. 308 Explanation of Inheritance not prevented from passing at the proper moment of their development to terrestrial life. "One could say that this depends upon the amblystomal form being not yet sufficiently fixed in the heredity of the species, since the epigenesis resulting from this heredity does not yet necessarily cause the appearance of the amblystomal form so long as the conditions to which this form is adapted are not reali...zed. " 227 Finally the experiments of Cunningham on the colors of flat fishes already quoted above, are well known. He has shown that during their first metamorphoses, while the pigment is still present on both sides, the action of light artificially reflected upon the side of the fish which is turned toward the bottom does not prevent the pigment from disappearing even then from that side, so that in this case the color passes rapidly through a retrograde development. But a prolonged exposure to light pro- vokes the reappearance of the pigment on the lower side, and the pigment spots are in every respect like those which are normally present on the upper side of the fish.
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