The Science and Philosophy of the Organism

heir origin to ordinary variation. They may at least, if we are entitled to assume that heredity in some cases is able to hand on such variations without reversion, which, it must be again rema

al histological adaptedness may be regarded hypothetically as due to an inheritance of adaptive characters which had been acquir

for no hypothesis at present accounts for the foundation of all systematics, viz., for the differences in organisation, in all that relates to the so-called types

ng, relating to mere tectonics, is practically nothing: indeed, there are at our disposal only the few facts observed by de Vries or derived from the experience of horticulturalists and breeders. We may admit that these facts at least prove the possibility159 of a discontinuous variation, that is of "mutatio

be at the base of all transformism, and it is well known that hypothetical statements about an original law of phylogeny have been attempted by N?geli, K?lliker, Wigand, Eimer, and many others. But a full discussion of all these "laws" would hardly h

independent discoverer of the elimination principle, admitted an exception to this principle in at least on

l statement that there must be an unknown principle of transformism, if the hypothe