Ussher, Archbishop, 178.
Variation, 110; causes of, 111; among individuals, 112, 113; fact of difference, phenomenon of, 114; 115, 118, 119, 121, 129; congenital, 138; human, 174; racial, 177; laws of, in mental phenomena, 203; 232.
Vertebrata, 43.
Vertebrates,
backboned animals, fishes the lowest order of, 46;
principles of relationship, families, tribes, 47; 53-59;
great classes originate together, 64;
more complicated, 68;
skeleton remains of, succeed invertebrates, 92;
testimony of the rocks, 93;
largest, 94;
appearance of great classes of, 94; 95;
classes that make up, 156;
lower, arrangement of organs, 201;
nervous system of, 256, 257.
Volcanoes, 88.
Volvox, 252, 254, 259, 265.
Von Baer, law of recapitulation, 71.
Vorticella, 251, 252, 265.
Wagner, 100.
Wallace, Alfred Russel, 117, 100.