46 HEREDITY IN RELATION TO EUGENICS 



It is to be kept in mind that the children are mostly young, 18 to 25, 

 and consequently do not show their potentiahties in weight. Neverthe- 

 less, while there are 6 children below the normal in weight, giving a de- 

 ficiency of 58 pounds, there are 9 above the normal with an excess of 202 

 pounds. 



When both parents are heavy (disregarding grandparents) 

 the numbers of Ught and heavy children are practically equal 

 (39 light to 34 heavy or 465 pounds total deficiency to 490 

 pounds total excess). 



When one of the parents is heavy and the other slender 

 both heavy and slight ofifspring occur and, in youth at least, 

 the sHght are more numerous than the heavy. Table VIII 

 gives the data on this mating. 



Table VIII 



THE DEVIATIONS FROM NORMAL STOUTNESS (WEIGHT -f STATURE) OP THE 

 ANCESTORS AND CHILDREN IN SIX FAMILIES WITH ONE SLENDER AND ONE 

 HEAVY PARENT 



In Table VIII are included 27 children, 7 above the normal 

 stoutness and 20 below, or a total of 30 pounds excess to 324 

 pounds deficiency. 



A pedigree of a family with hereditary obesity is described 

 by Rose (1907). A girl of 15 with a stature of 145 centi- 

 meters (57 inches) weighed 75 kilograms (165 pounds). The 

 father and his parents were not obese, ^ The mother, on the 

 other hand weighed 88 kilograms and her father 99 kilograms, 

 while the mother's mother is slender. Of the four children 



* There is no evidence that they did not carry the factor that favors obesity 

 or that they were wholly unrelated to the maternal side. 



