276 



INDEX 



Chromosome, defined, 42 

 Cicero, i 

 Ciona, 211 



Circulation in old age, 14, 15 

 Compayre (foot-note), 237 

 Connective tissue, 32, 60 

 Cornaro, 2 

 Corpuscles, blood, 76 



salivary (foot-note), 72 

 Councilman, W. T. (foot-note), 



138 



Curtis, W. C. (footnote), 211 

 Cycle, cellular, 229 

 Cytomorphosis, 38, 169, 206 



and longevity, 228 



defined, 46 



of blood corpuscles, 76 



three laws of, 249 



D 



Darwin, Charles, 234 



foot-note, 237 

 Death, 169, 213, 216, 229 



accompanies development, 36 



and differentiation, 215 



natural, 261 



of cells, 80 

 gland, 72 



table of (foot-note), 75 

 while young, 74 



of hair, 36 



of higher organisms, 215 



of lower organisms, 214 



of parts, 214 



of protozoa, 260 

 Degeneration of cells, 67 



brain cells, 69 

 Deiters (Fig. n), 50 

 Descartes, 241 



Development, embryonic type, 

 196 



larval type, 196 



psychological, 236 

 Differentiation, 153, 158, 225 



and functions in man, 216 



and growth, 161 



complex, 194 



defined, 45, 64 



in embryos, 158, 160 



in higher animals, 195, 196 



in larvae, 194 



object of, 154 



of connective tissue, 149 



of gland cells, 147 



of muscle, 147 



of nerve cells, 144 



of protoplasm, 143 



of Stentor, 142 

 Digestive tract in old age, 14 

 Dilepta, 184 

 Disease, of old age, 23 



two kinds of, 224 

 Disharmonies, Metchnikoff on, 24 

 Dog-fish, 181 

 Donaldson, H. H., no, in, 114 



foot-note, 128 

 Driesch, Hans, 170 

 Dungern and Werner, 205 

 Dysentery, 138 



E 



Earthworms, 198 



Entamceba, 137 



" Entdifferenzirung, " 170 



Epithelium, 54 



Exercise, effect of on muscle, u 



Eycleshymer, A. C., 156, 164., i 78 



Face in old age, 4 

 Fatigue, mental, 245 

 Fermentation in intestine, 25 

 Fibrils of connective tissue, 43 

 Fischer (foot-note), 27 

 Fraisse (foot-note), 204 



Gait in old age, 5 

 Gemmules, 234, 235 

 Genetic restriction, 222 

 Gerassimow, J. J., 184 

 Germ cells, 181 



in old age, 16 



Germ layers (foot-note), 47 

 Girls, table of growth of, 112 

 Gland-cells, 56 

 Glands, growth of, 192 



orbital, 56, 147 

 Goeze (foot-note), 197 

 Gould, B. A., 92, 247 



on stature of soldiers, xiii 

 Growth (see also Rate of growth) 



