STUDIES ON THE DURATION OF LIFE 205 



rized in this and the preceding chapter by any such evi- 

 dence as that of Hersch. 



TABLE 24 

 Stillbirths in Paris {1911-13) by classes of arrondissemertts (Hersch) 



This, indeed, he himself finds to be the fact when he 

 considers the extremely sensitive index of hereditary 

 biological constitution furnished by the stillbirth rate. 

 Table 24 gives the data. We see at once that there is no 

 such striking increase in th.e foetal mortality as we pass 

 from the richest class of districts, as was shown in the 

 death rate from all causes. Instead there is practically 

 no change, certainly none of significance, as we pass 

 from one class of districts to another. The rate is 8.2 

 per 100 living births in the richest class and 9.8 in 

 the poorest. ' 



Other definite evidence that such conclusion as those 

 of Herscb caunot be accepted at anything like tbeir face 

 value is afforded by the work of Greenwood and Brown 

 on the relation of poverty and the infant death rate. 

 They find, giving subscripts the following meanings : 



Subscript 1 = Birth rate 

 Subscript 2 = Artificial feeding rate 

 Subscript 3 = Poverty rate 

 Subscript 4 = Infant death rate 



that 



r84.i2=.17±.07 



on the basis of the Bavarian data of Grroth and Hahn. 



