SUMMARY 01 I "\< LI 3ION8. 153 



9. The heavy build of the infant corresponds to thai of the short- 

 legged anthropoids. The Long-legged, Blender-build Bfc 



of 12 years persists in the Nilotic negroes and many 1" 

 minded. 



10. In adult life the changes in build vary with familn ». In those 

 characterized by slender build there is typically little change. In 

 those characterized by fleshy build there is typically progn in- 

 crease in weight to 50 years. In some families weight flud 

 greatly at different periods of adull life. In general, though with 

 numerous exceptions, a fleshy adult build is foreshadowed in plump 

 build in childhood. 



11. Mass studies on adult build give a polygon of distribution 

 which is skew, the mode being toward the slender* r end of the 

 polygon. There is evidence of more than one mode, and hence that 

 there are two or more types of build. For purposes of description 

 five classes of build are recognized — very -lender. Blender, medium, 

 fleshy, and very fleshy. 



12. The diseases associated with very slender and Blender build an 

 tuberculosis, pneumonia, "nervousness." melancholia. The d 

 associated with very fleshy or fleshy build are: diabetes nephi 

 and dropsy, apoplexy, and arterio-sclerosis and paralysis accompany- 

 ing it; also numerous diseases of the alimentary tract. 



13. Fleshy parents have, on the average, in our data, larger famili 

 than slender parents. 



14. Regression tow r ard mediocrity is less striking in the offspring of 

 slender than of fleshy parents, suggesting that fleshy parents carry 

 not only genes for fleshiness but also for slenderness, while Blender 

 parents more rarely carry genes for fleshiness. 



15. The offspring of two fleshy parents are twice as variabli 

 those of slender parents. 



16. The hypothesis is indicated that genetically build is controlled 

 by multiple factors, with fleshiness tending Blightly to dominate over 

 slenderness. 



17. There is a marked tendency for persons of Bimilar build (or 

 with potentialities for such) to intermarry. Dissimilar buildi 

 selected against. 



18. Two slender parents of slender stock have rarely any pi 

 whose index of build exceeds 2.2, or just above the upper limit of the 

 slender group. In general the progeny of slender parents are rela- 

 tively slightly variable. 



19. The slender parents are apparently of two kinds: th iny- 

 ing only one kind of factor for fleshy build and the other two such 

 gametic factors. The progeny of the former are very Blightly variable; 

 those of the latter more variable. 



