BOTH PARENT8 BLENDER. 



Thus a very variable progeny would he produced: very Blender, 

 slender, medium, and fleshy. Now it seems probable thai the totals 

 of table 23 are a combination of these two kinds of matings and 

 another which would yield very slender, slender, and medium off- 

 spring in the proportions of 25, 50, and 25, respectively. 



Considering only the families of table 23 who have 3 or more 

 children, we get a total distribution for these children of: 



vs s M 



5 34 4 



If we subtract from the S total the 16 children who belong exclu- 

 sively to slender fraternities, the children who remain have the dis- 

 tribution 5 : 18 : 4, which is fairly close to the 1:2:1 ratio of 

 6.75 : 13.5 : 6.75 which is to be expected from a mating of parents of 

 the zygotic constitution AAbbcc and AaBbcc respectively. 



We conclude, therefore, that the S X S matings are gametically 

 of two kinds, one slightly, the other more greatly variable. The dis- 

 tribution found is determined by a combination of these two kinds. 



Also, the statistical results of the distribution of the progeny of 

 S X S matings are in harmony with the hypothesis that slender 

 parents in extreme cases carry not more than two zygotic factors for 

 fleshy build. The slender parent is, accordingly, to be regarded as 

 one who carries gametes with prevailingly recessive factors. 



Class II. Both Parents Fi.kshy. 



Next we turn to the matter of inheritance of fleshiness in fleshy 

 stock. That fleshiness may be a true hereditary character is indicated 

 by the existence of fleshy races of men. Examples are the South- 

 Russian Jews, especially of the female sex: and certain of the 

 Chinese, who have strikingly short legs. The matter is discussed in 

 more detail at page 7. The fact that the body reacts to food and 

 climate must not blind us to the constitutional factors that arc prob- 

 ably present in racial obesity. At any rate, it becomes of interest to 

 inquire as to inheritance of fleshiness in families characterized by the 

 trait. For this purpose we shall consider various matings betw< 

 more or less fleshy parents. 



Mating l. One Parent is Veby Fleshy, the Otheb I'm -m (oh Van Fleshy) m 



Fleshy Stock. (Table 24.) 



From this mating of "pure" or nearly "pure" fleshy parents are 

 derived (table 24) 50 offspring: 2 S, 11 M. 23 F, It VF, or, in per- 

 centages, 4 S, 22 M, 46 F, 28 VF. This distribution of the total d< 

 not agree with the 4-zygotic-factor hypothesis (p. 41), which gi 

 a filial distribution of 50 F, 50 VF. It agrees better with the 5-factOf 

 hypothesis (p. 43), assuming the proper dividing-line between 

 fleshy and very fleshy to lie somewhere in column 5. and the mating 



