INDEX 



527 



Mesoderm, 27, 28 

 Metabolism, 12, 36 

 METCHINIKOFF, disharmonies in 



man, 361, 495 

 Metempsychosis, 40 

 Microscopic particles, smallest 



visible, 99 

 Mind and body, 45 

 Mind, development of, 42, 43 

 MIHABILIS, white-red cross, 231, 



232, 234, 249, 265 

 Mitosis, 21, 24, 110, 112, 113, 

 114, 115, 116, 120 



significance of, 122, 123,! 



125, 126 



"Mneme" theory, 347, 348 

 Modifiability of behavior, 68 

 Molecular constitution, stere- 



oisomeres, 155 



Molecules, largest known, 99 

 Monasticism, 409, 430, 431 

 Monohybrid, 228, 236, 240, 244 

 Monotremes, 32 



Monstrous development, 309, 

 454, 455 



cause of, 310 

 MONTGOMERY, on Chromosomes 



of man, 147, 499 

 Moral qualities inherited, 205 

 MORGAK, mutations of insects, 

 348, 391, 495, 499 



sex chromosome, 166, 167' 



sex determination in Phyl- 

 loxera, 150 



. sex-linked inheritance, 271, 

 212, 274, 275, 276, 277, 

 278 



rapid breeding of Droso- 



phila, 290 

 Morphological characters, 196 



tests, 39 



Mosaic development, 333, 318 

 Moth and flame, 464 

 MOTT, insanity inherited, 206 



495 



Mouse, maturation and fertili- 

 zation, 114. 



Movements, within eggs and 

 cleavage cells, 50, 106, 

 110, 117, 183. 

 effects of stopping, 328 

 random, 55 



of spermatozoa, 49, 50 

 Mulattoes, skin color, 282-285 

 in Jamaica, 417 

 in U. S. 417 

 MULLER, JOHANNES, 478 

 MULSOW, 132-135, 499 

 Multiple factors, in oats and 



wheat, 281 

 skin color, 282-285 

 size, 285-287 

 Multiple sclerosis, 295 

 MUSCA, symmetry of egg, 169 

 Muscular atrophy, 295 

 Mutation Theory, 305 

 MUTATIONS, 209-211 



AND FLUCTUATIONS, 211, 



212, 389 

 progressive and regressive, 



394 

 origin of, 310-314, 348, 388- 



392 



Mutilations, not inherited, 339 

 Myopia, 200 

 NAGELI, idioplasm, 97 



non-inheritance of alpine 



habit, 345, 495 

 Natural selection, 377, 380, 402, 



438 



nullified, 408-411 

 Nature, definition of, 446 

 man part of, 447 

 mechanistic conception of, 



446 



vs. nurture, 301 

 stability of, 399 

 voluntaristic conception of, 



444 



NECTUHUS, behavior of, 69 

 Neo-Darwinism, 45 

 Neo-Lamarckism, 45 

 NEREIS, spermatozoon of, 17 

 maturation and fertiliza- 

 tion of, 20, 21 



