SUBJECT INDEX 773 



palate length, 171, 171 



palate length related to skull length, 181', 182 

 related to skull type, 184-186, 185 



palate process related to total palate, 182-184, 183 



palate width, 160, 160 



skull length, 169, 170, 203-204, 204 



related to maxillary premolar tooth size, 203-205 



zygomatic width, 156-157, 157 

 modifications of, underlying factors in, 359-360 



and dental defects, 229, 232-235, 233, 262, 265, 27s, 370-372, 371 

 nasal bones of, congenital absence of, 321, 322 

 normal type, 152-155 

 occipital crest in, 190 

 premolar carrying interval of, 230 



size variations of, in bassethound-English bulldog hybrids, 321, 322-325 

 type differentiation of, value of indices and measurements in, 184-186, L90, 

 206, 21H-211, 22H-224, 305-306 



ami distortions, analysis of problems concerning, 225—226 

 variety of, among dogs, 9, 151-152, 210-211 



Species, origin of, 24, 35 



Spinal motor neurones, loss of, 25-27 



Stimuli, auditory, nature of, 53 I 

 response to, 549, 558 

 olfactory, nature of, 536 



tactile, nature of. 534 

 response to, 549, 558, 562 



visual, response to, 549, 563 

 Structural changes, in evolution of species, 24-2S 

 Structural deviations, (see also growth) 



among different species, 9-11, 19-26 

 Suprarenal, adrenalectomy, effect of, on behavior, 730-735, 735 



and suprarenal cortical extract, effect of, on behavior, 730-735, 735 



adrenalin, effect of, on behavior, 723-730 



deficiency of, and disease, 421 



histological technique for, 423 

 Swine, 21 



Tail, differences in, among dogs, 9-10 



inheritance of screwtail in bassethound-English bulldog hybrids, 388-396, 390, 

 393, 395 

 Teeth, (see also dental defects, dental occlusion, dentition) 



differences in, among dogs, 10 



premolar, size of, 176-17*, 176, 177, 178. 180-181, 181, 205, 205 



size of, as related to jaw size, 177—178 



