SUBJECT INDEX. 



407 



Exclusive inheritance, 132; obeys 

 Law of Heredity, 133 



Excreta, effect of, on growth, of 

 larvae, 298; of molluscs, 302, 

 307; of tadpoles, 306; of Daph- 

 nia, 308 



Exophthalmos, apparent inherit- 

 ance of, 263 



Expectation of life, 347 



Exposure, effect of, on plant 

 growth, 248 



Eye-colour, transmission of, 132 



Eyes, relation of, to change of 

 skin colour, 255 



F 



Fertilisation, premature, in rab- 

 bits, 113; effect of tempera- 

 ture at time of, 191 



Fertilisations, artificial, method 

 of effecting, 105 



Fertility, correlation of, with 

 structure, 87, 88, 89; inherit- 

 ance of, in man and in horse, 

 87; maximum, of type forms, 

 90; of hybrids, 165; in man, 348 



Fibonacci, series of, 48 



Finger-print method, as regards 

 twins, 118 



Finger-prints, 170 



Fin-rays, variability of, in cer- 

 tain fishes, 27 



Fit of curves, estimation of, 35 



Flagellata, adaptation of, to high 

 temperature, 379 



Floral structures, relation of, to 

 arid surroundings, 265 



Flounder, effect of light on, 251 



Food, as a cause of variability, 

 281; effect of, on bees, 287; on 

 aphides, 288; on Lepidoptera, 

 288-290; on larvae, 291; on tad- 

 poles, 292; on birds, 293, 295; 

 on mammals, 294; ouSaturnia, 

 317 



Forficula auricularia, variation 

 in, 37 



Fowls, production of malforma- 

 tions in, 174; effect of meat 

 on, 295; effect of domestication 

 on, 333 



Fox, variation in, 328 



Fraternal correlation, 128, 135; 

 in aphis and daphnia, 180 



Frog, development of, in rela- 

 tion to temperature, 225, 226, 

 227 



Frogs, effects of feeding on, 292 



G 



Gallus bankiva, reversion to 

 characters of, 142 



Galton's function, 74 



Gangrene, apparent inheritance 

 of, 363 



Genetic Selection, 81 



Genetic variations, 102 



Germ, infection of, 175 



Germinal Selection, 395 



Germinal variations, 102 



Germ-plasm, existence of definite 

 units in, 135; influenced by 

 somatic variations, 360 



Geographical races, variability 

 of species with, 220; of mack- 

 erel, 319; of herring, 322; of 

 birds, 325; of mammals, 327 



Grades, method of, 20, 22 



Grandparents, contribution of, 

 to characters of offspring, 122 



Growth, rate of, in man, 201; in 

 guinea-pig, 203; relative rate 

 of, 203; retardation and accel- 

 eration of, 204; loss of varia- 

 bility with, 204; curves of, 

 208; in offspring, affected by 

 mother, 209; effect of salinity 

 on, 278; in relation to prod- 

 ucts of metabolism, 296, 298, 

 302, 303, 307, 308 



Growth of organisms, reaction 

 of, to environment, 189 



Growth power, progressive loss 

 of, 203 



Gull, effect of food on, 295 



Hsematoma, apparent inheritance 



of, 363 

 Hair, effect of cold on, 244 



