59개의 결과 중 1 - 5개
On tho absence of intermediate varieties at the present day — On the nature of
extinct Intermediate varieties j on their number— On the vast lapse of time, as
inferred from the rate of deposition and of denudation — On the poorness of our ...
It has often been loosely said that all our races of dogs have been produced by
the crossing of a few aboriginal species ; but by crossing we can get only forms in
some degree intermediate between their parents ; and if we account for our ...
May not those naturalists who, knowing far less of the laws of inheritance than
does the breeder, and knowing no more than he does of the intermediate links in
the long lines of descent, yet admit that many of our domestic races have ...
Those forms which possess in some considerable degree the character of
species, but which are so closely similar to some other forms, or are so closely
linked to them by intermediate gradations, that naturalists do not like to rank them
But cases of great difficulty, which I will not here enumerate, sometimes occur in
deciding whether or not to rank one form as a variety of another, even when they
are closely connected by intermediate links ; nor will the commonly-assumed ...
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