372 



Index 



Irritability, 9 



ISOLATION OF SUBSTANCES IN CELLS, 



205 

 in protozoa, 207 



JAMES, WILLIAM, 304, 331 

 JENNINGS, action of selection, on 

 Paramecium, 269 



on Difflugia, 269 



behavior of Paramecium, 47 



behavior of Stentor, 50 



inheritance of size in Parame- 

 cium, 67 



on Gallon's law, 81 



on potential personalities, 334 



rapid breeding of Paramecium, 

 116 



training of star-fish, 51 

 JEROME, ST., 33 



Jews, mixture with Gentiles, 301 

 JOHANNSEN, action of selection, 269 



genotype and phenotype, 127 



inherited weights of seeds, 66 



"pure lines," 266-269 

 JOHNSON, marriages of college wo- 

 men, 308 



KAMMERER, effects of colored soil on 

 salamanders, 247 



KEIBEL, development of human em- 

 bryo, 27, 28, 30 



KEITH, internal secretions and racial 

 characters, 235 



Keratosis, 117 



KING, modification of sex ratio, 166 



KORSCHELT and HEIDER, Symmetry of 

 egg of Musca, 196 



LANE, development of vision, 31 

 LAMARCK, on inheritance of acquired 



characters, 237 



LAMARCKIAN HYPOTHESIS, 245 

 Lamarckism, 32 

 LANG, snail hybrids, 106 

 LAUGHLIN, ancestors and contribu- 

 tors, 79 



Laws on Eugenics, 303 

 Learning by experience, 49, 330 

 Left-handedness, inheritance of, 68 

 Lens, cataract, 66, 118 



development of, 232 



displaced, 118 



weight of, 66 



LEPTINOTARSA, selection in, 267 

 Lethal factors, 105 



sex-linked, 185 

 Life, artificial production of, 214, 215 



conditions limited, 324 



definition of, 6 



maze of, 329 

 LILLIE, on fertilizing, 173 



on "free martin," 168 



sex determination, 168 

 Limbs, transplanted, 236 

 LINCOLN, 306 



LINKAGE OF CHARACTERS, 185 

 LOCALIZATION PATTERN, 197 



in eggs of ctenophore, flat-worm, 

 echinoderm, annelid-mollusk, 

 chordate. 202 

 Localization of substances in cells, 



142 



LOCKE, JOHN, 214 



LOEB, J. Artificial parthenogenesis, 

 134, 174 



reflexes, 39 



tropisms, 43 



Logic, as test of truth, 323 

 LOLIGO, symmetry of the egg, 196 

 Longevity inherited, 68 

 LOTSY, source of variations, 2/3, 274 

 LOWELL, BIGLOW PAPERS. 237 

 LUTZ, chromosomes of Oenothera, 282 

 Luxury, cause of infertility, 313 



MACFARLANE, on Dionaea, 44 

 McCLENDON, production of one-eyed 



monsters, 172 

 McCLUNG, on sex determination, 161, 



180 



on mammalian chromosomes, 162 

 McCRACKEN,, maternal inheritance, 



H3 

 McDouGAL, influence of chemicals on 



ovules, 218 



MACDOWELL, size in rabbits, in 

 Selection in Drosophila. 260 

 MCGREGOR, Restoration of Pithecan- 

 thropus skull, 288 

 Male babies, greater mortality, 167 

 MALTHUS, theory of, 303 

 Man, controls destiny, 280 



dominant races of 289, 290 

 evolution of, 287 



