400 



Index 



Living beings, in nature, ii, 211 

 Living substance, i, 115 

 Living units, hj'pothetical, i, 19 

 Localization, by protoplasmic flow- 

 ing, ii, 19 

 Locust, i, 218 

 Locy, Wm. A., i, 280 

 Loeb, Jacques, i, 23; on relative in- 

 fluence of nu cleus and protoplasm 

 on heredity, ii, 41; on identifica- 

 tion of internal secretions with 

 "formative stuffs," 141; on 

 "ultimate aim" of biologj% 151 ; 

 and "organism as a whole," 185; 

 neglect by, of work of Sher- 

 rington and Cannon, 185; on 

 understanding of natural phe- 

 nomena, 207; organismal ten- 

 dency of tropism theory of, 

 240 

 Logic, pure, i, 22 

 Loomis, L. M., i, 85 

 Love, emotions of, ii, 265 

 Luciani, L., ii, 115 

 Lucretius, i, 3 



Machines, living, ii, 252 



Macrocystis pyrifera, ii, 105 



Mammals, storing habits of, ii, 271 



Manly, J. M., on "exuberant vital- 

 ity" of Shakespeare, ii, 223 



Marceau, F., ii, 61 



Marshall, F. H. A., ii, 79 



Materialism, author's attitude to- 

 ward, ii, 207; Huxley against, 

 302 



Mathematics, ii, 297 



Mating habits, of birds, ii, 263; 

 of fishes, 265 



Matter, and energy, in modern 

 physics, i, 76, 141; and force, 

 196; composition of, 288, 341; 

 generality of the term, 304 



Mass action, ii, 344 



McClung, C. E., i, 347 



Mcllvane, Charles, i, 87 



McMurrich, J., Playfair, on germ 

 layers, i, 47; character of cell 

 division in embryo, 219 



Meadow lark, western, song habit 

 of, ii, 259 



Mechanism of heredity, i, 315, 

 322; organic vs. inorganic, ii, 252 



Medussetta, i, 236 

 Meirowsky, E., i, 339 

 Melanin, i, 339; formed in cyto- 

 plasm, 341 

 Membrane, and surface structure 

 of bacteria, i, 257; synaptic, be- 

 tween cells of reflex arc, ii, 167 

 Mendel, Gregor, i, 305 

 Mendelian inheritance and chro- 

 mosomes, i, 356 

 Mendelism as a creed, i, 324 

 Mental, sense, i, 3; initiative and 



restlessness, ii, 243 

 Meristic parts, ii, 95; meristic phe- 

 nomena in plants and in ani- 

 mals, 103 

 Merotomy, i, 276 



Mesenchyme cells, dormant in tad- 

 poles, ii, 147; as inheritance 

 material, 155 

 Messengers, chemical, secretin as 



example of, ii, 119, 121 

 Mesoderm, i, 46 



Metabolic processes, and the or- 

 ganism's supremacy over its 

 cells, i, 294; interdependence of, 

 ii, 104 

 Metabolism, i, 215; germ cells sub- 

 ject to, ii, 74; katabolic and 

 anabolic, 346 

 Metals, "base" and "noble," ii, 288 

 Metameres, ii, 95 

 Metamorphosis, ii, 145 

 Metaphysician, ii, 285 

 Metaphysics, chromatin and, i, 

 321; juvenile, ii, 141; as an epi- 

 thet, 201 

 Metaplasv, of diiferentiated cells, 



i, 186 ■ 

 Metazoa, i, 268 

 Metcalf, M. M., i, 289 

 Method, experimental, ii, 278; sta- 

 tistical, employed at Scripps In- 

 stitution, 280; natural history, 

 in study of self, 282; impor- 

 tance of, 282 

 Meves, F., ii, 35 

 Meyer, Arthur, i, 258 

 Mice, summersaults of, ii, 258 

 Michael, E. L., ii, 281 

 Microbes, specificity of, i, 265 

 Miescher and Kossel, i, 79, 102 

 Migration, of sex-cells, i, 61; ex- 



