434 



V. BUNAK 



In many cases the low SRi is accompanied by a high infant mortality and 

 in such cases we have to do with a general predisposition (of an endo or 

 exogene nature) manifesting itself more or less equally in both prenatal and 

 early postnatal periods. Tendencies of this kind may be found in many Finn 

 groups of the U. S. S. R. Md = the number of infants dead under one year 

 per 100 born in this year (1927), SRd = SR of dead infants (data of Statisti- 

 cal Administration of the U. S. S. R., calculated by me) (table 2). 



TABLE 1 



Chukchee . 

 Koryaks. . 

 Lamuts . . . 

 Yakuts . . . 

 Tungus . . . 

 Samoyedes 

 Voguls 

 Ostyaks. . . 



NUMBER OF 

 BIRTHS IN 

 1925-26 



432 



249 

 114 

 249 

 548 



1,089 

 512 



1,096 



SRi 



96.4 



96.0 



91.0 



99.4 



125.0 



111.4 



91.8 



102.2 



TABLE 2 



Komi-Zyzyans .... 



Permyaks 



Votyaks 



Mari 



Mordva 



Chuvash 



Russians in general 



Ukrainians 



White Russians . . . 

 Jews 



SRi 



104.4 

 99.2 

 105.0 

 104.0 

 104.0 

 104.8 

 105.4 

 106.4 

 106.1 

 108.4 



Md 



34.7 

 36.4 

 21.9 

 38.8 

 27.2 

 21.2 

 21.9 

 15.0 

 10.0 

 5.4 



SRd 



111.4 

 109.7 

 109.7 

 109.0 

 113.0 

 109.7 

 111.5 

 121.0 

 122.0 

 118.0 



11. A low SR if accompanied by high infant mortality is in most cases 

 also accompanied by a low SR of infants dying under one year for the lesser 

 vigor of the male sex manifests itself most clearly when the general level of 

 mortality is not high (Holmes, Schirmer) and the SR decreases v/hen infant 

 mortality rises. 



12. These facts permit us to consider the SRi as an index of vitality not 

 only in the prenatal period but also to a certain degree in the early period 



