400 



Index 



Living beings, in nature, ii, 211 



Living substance, i, 115 



Living units, hypothetical, 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 nucleus and protoplasm 

 on heredity, ii, 41 ; on identifica- 

 tion of internal secretions with 

 "formative stuffs," 141; on 

 "ultimate aim" of biology, 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 theoiy 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 



Macrocystw 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 



Metaplasy, of differentiated 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- 



