Embryology, 32, 33, 34; of no form fully understood, 57; general principles of, 57-67; embryonic agreement, 65; of insects, 67; weight of facts of, 69; comparative, a distinct division of zoölogy, 70, 71; 76, 94, 100; evidence of, 170; of mind, 202, 214; in early stages of human, no nervous system present, 214; development of, 215.
English sparrow, 123, 127.
Environment, 111, 112;
influences of, 126;
determines mode of life of a race, 213.
Epoch, Glacial, 86;
Silurian and Devonian, rich array of types, 93;
Cenozoic, 96.
Erosion, 89.
Eskimo, picture-writing, 223.
Ethics, 281; biological, 283; natural, 284; evolution of, 285.
Ethnology, 177.
Evolution, the Doctrine of, 1;
is it a science, 3;
the conception of, 8;
organic, 10-12; 31, 32;
evidence of, 54, 95;
of amphibia, 62;
of birds, 63;
of protozoa, 69;
theory of, supported by palæontology, 76;
cosmic, 84;
biological evidence of, 91;
three important elements of, 109;
adaptation, variation and inheritance, 110;
mechanical, 109;
dynamics of, 109;
second element of, 122;
human, 150-196; 174;
physical, of man, falls into two groups, 153;
of human races, 176;
racial, 177, 178;
mental, 197-240;
human faculty as a product of, 212;
mental as real as physical, 214;
of brain, 214-217;
of art of writing, 223;
method of mental, 231;
social, 241;
of societies of insects, 258;
human, biological interpretation of, 267-274;
of higher human life, 278-311;
of ethics, 285;
final conception of, 307-311.
Factors, primary, secondary, 110; three kinds, 111; congenital, 113.