240 



INDEX 



VOL. 35 



PAGE 



General outline of method followed in bone examinations 3 



shape of the femora of the lower animals 3 



summary of results 2 



survey 27 



Geographical location, influence of, on variation 25 



Grade of animals in biological classification 24 



Haversian systems 11, 16 



la differentiation 15 



lb differentiation 15 



Ic differentiation 16 



C differentiation 16 



formation of 11 



showing stages of senility 33, 34, 203, 204 



of the ostrich 68 



Headings of the summary 3 



Health, influence of, on bone 27 



Heredity, influence of, on bone variations 27 



Highly differentiated bone type of structure 16 



Histological examination of two entire femora, general description 32 



detailed description 213-21S 



human femur No. 300 213 



head 213 



neck 213 



lesser trochanter 214 



fourth section 214 



fifth section 214 



sixth section 214 



seventh section 214 



eighth section 215 



ninth section 215 



tenth section 215 



eleventh section 215 



twelfth section 215 



thirteenth section 215 



fourteenth section 215 



fifteenth section 216 



human femur No. 301 216 



head 216 



neck 216 



lesser trochanter 216 



fourth section 217 



fifth section 217 



sixth section 217 



seventh section 217 



eighth section 217 



ninth section 217 



tenth section 217 



eleventh section 21S 



twelfth section 218 



thirteenth section 218 



fourteenth section 218 



fifteenth section 21S 



History of investigation 1 



Humerus of negro. No. 248674, U. S. Nat. Mus 163 



la stage of Haversian differentiation 15 



lb stage of Haversian differentiation 15 



Ic stage of Haversian differentiation 15 



Incomplete differentiation of Haversian system 15 



lamina 14 



Increase of medullary index from amphibian to bird i; 



