continuity of, ii. [241];
possible limitation of, ii. [242], [416]-[417];
in domestic cats, i. 45-48;
origin of breeds of cattle by, i. 88;
in osteological characters of rabbits, i. 115-130;
of important organs, i. 359;
analogous or parallel, i. 348-352;
in horses, i. 55;
in the horse and ass, i. 64;
in fowls, i. 243-246;