Chromatin, 143, 144.
Civilization, a product of evolution, 272.
Classes, 32.
Classification, 32.
Clifford, 238.
Coccyx, 168.
Communities, cell, 258; insect, 258, 260-264.
Comparative anatomy, 35, 37, 39; any form will disclose development, 57; amphibia evolved from fishes, 64; Law of Recapitulation, 66; insects arisen from wormlike ancestors, 67; larvæ of insects, 67; higher animals evolved from two-layered saccular ancestors, 68; 70, 71; supplements comparative embryology, 72; appearance of great classes of vertebrates, 94; proves order of evolution, 163.
Composition, chemical, 15.
Compounds, organic, 29.