BLENDER X FLESHY. Hi.", 



Kbo .*> Family. 



A family of Russian and Austrian extraction, living in New Yorl 



The Father, who is a tailor, nervous has, :it »•"> formuln I J" 



inches; build 2.0 (29). Hi^ father, who was a tailor, :dv. 

 85 years from pneumonia. Formula. 150/66 inches; build 2.4 I 

 mother, who had 5 children, always well, died at 56 yeara from pneumi 

 Formula. 140/58; build 2.9 (42). 



The Mother, who has 3 children, has at it years the formula 172 61 

 inches; build 3.2 (46). Her father, who was a tailor, is living at 81 

 Formula, 175/68 inches; build 2.7 (38). Ber mother, who had 6 children, 

 died at 58 years from pneumonia. Formula. 101 <(>() indie-; build 2 I 



The only grown child, a male, who in youth Buffered from diphthi 

 scarlet fever, and pneumonia, has at 19 years the formula 203 72 in< 

 build 2.7 (39) ; adjusted to 45 years, 228/74 inches; build 2.8 | 12). 



Comment. — The child is young and the possibilities of build in hi- ■ 

 can not be foreseen, but he is already stout and may be expected to approach 

 his fleshy Mother in build (R : Kro-3). 



Tea-A Family. 



A family from New York State. The Father, at 70 years, had the formula 

 225/68 inches; build 3.4 (49). 



The Mother, at 50 years, had the formula 115/65 inches; build 1.9 (27 

 The 5 children are: 



1. Male, at 58 years, has the formula 225/70 inches; build 3.2 < 16). 



2. Male, at 40 years, 140/69 inches; build 2.1 (29) ; adjusted to 55 y< trs, 

 145/69 inches; build 2.1 (31). 



3. Male, at 68 years, 130/68 inches; build 2.0 (28). 



4. Female, at 60 years. 125/64 inches; build 2.2 (31). 



5. Female, at 62 years, 140/66 inches; build 2.3 (32). 



Comment. — There are 2 slender children. 2 medium, and 1 very fleshy, 

 suggesting a sire who is heterozygous for build (S : Tea— A ). 



Summary. 



Combining the progeny of the 4 matings of the F generation, 

 we get the results shown in table 30. The mean of this series is 

 37.82^0.31; the standard deviation is 5.07 =* 0.22. It will 

 observed that the proportions of the totals autre closely with tl 

 mating 1 and give a somewhat closer agreement, with the expectation 

 of 8 : 42 : 42 : 8, than mating 1 does. 



The standard deviation of 5.07 ± 0.22 is greater than that of the 

 progeny of slender X slender parents (3.17 0.17), but not bo great 

 as that of very fleshy X fleshy parents of fleshy stock ( table 24 I which 

 is 5.74 ± 0.39. It is much less than the standard deviation of the 1 

 progeny (table 31), which is 6.78 ± 0.26. This is in accordance with 

 the usual genetical finding, that the F, generation is [ess variable than 

 the F, generation. In this respect, as in so many others, the distribu- 

 tion of progeny is exactly that found in experimentally determined 

 multiple-factor characters. The heredity of build follows closely the 

 Mendelian formulas. 



