i6 



THE RELATIVE STRENGTH OF 



IV unhides occupation- with still hi^lu-r rates 9 and 10. 

 The next table gives the mean height and weight for each class. 



TABLE III. 



We see then that men occupied in a trade with a lower mortality 

 rate are heavier and taller than men in a trade with a higher mortality 

 rate, which suggests that the very small correlation we have found 

 bet ween unhealthiness of the father's trade and the height and weight 

 of his sons is not all due to the unhealthiness of the trade, but is due 

 at least, in part, to the inferior physique of the father. In fact \ve 

 have very little hesitation in saying that unhealthiness of a trade of 

 a father has small influence on the physique of his sons, and that it 

 is because men of inferior physique are forced into worse trades that 

 we see this apparent slight connection. 



\Ye now turn to the question of drink and shall measure its effect 

 on the height, weight, general health and intelligence of the children. 

 More disastrous results have been attributed to drink than to any 

 other social evil we might almost say than to all other social evils 

 taken together. Since we have been working at this subject we have 

 read carefully many speeches, as reported in the papers, on the subject 

 of drink, and confess we have been somewhat astonished at the 

 statements occasionally made. 



For example: a well-known man is reported to have said in the 

 course of a speech enumerating the various evils resulting from drink 

 that 10 % of the children of drunkards are tuberculous, but he made 

 no mention of the fact that practically 10 % of the general population 

 suffer at one or another period from tuberculosis. 



We do not say that alcoholism and tuberculosis are not associated, 

 it is quite possible they may be, but a statement such as that we have 

 quoted proves nothing of the sort, and is entirely misleading unless 

 we are told at the same time the percentage of the tuberculous in the 

 same class of the general population, which in this case was not stated. 



We have two series of statistics for studying the question of the 



