PARENTAL ALCOHOLISM AND THE PROGENY 279 



The data from the alcoholic matings of 1915 are as follows: 



Non-barred 

 Barred (sdf black) 



Males 95 



Females 104 



Sex not known 8 8 



The normality of these results is beyond cavil. 



The results regarding comb form are equally clear. The Black 

 Hamburg is a rose-combed breed, the Barred Rock a single- 

 combed. Rose X single normally gives rose in Fi. Out of 215 

 chicks from the alcohol matings 215, or all, were rose-combed. 



Similar data might be given for various other characters. 

 They all are the same, however, in principle, simply showing 

 that the normal regular course of Mendelian inheritance has in 

 no wise been altered or interfered with by the alcoholization of 

 the parents. 



XI. DISCUSSION OF RESULTS 



Before attempting to discuss any interpretation of the meaning 

 of our results it is first desirable to do something in the way of 

 summarizing them so that a clear and definite picture of the 

 net result may emerge from the mass of statistical data pre- 

 sented in the preceding pages. Such a summary is given in 

 table 14. The casual reader and the hostile critic are strongly 

 urged, however, not to regard table 14 as the only evidence for 

 the conclusions reached. This table aims only to summarize 

 fairly the net results of the detailed statistical evidence in the 

 body of the paper. 



The plan of this summary table is as follows. The superior 

 result is printed in bold faced type. In the last column of each 

 table a plus sign denotes that, with reference to the particular 

 character discussed, the progeny of the alcoholists have been 

 favorably affected; a minus sign that they have been unfavorably 

 affected as compared with untreated controls. A zero indicates 

 that no effect of the treatment, one way or the other, has been 

 detected. 



We see from this table that out of 12 different characters for 

 which we have exact quantitative data, the offspring of treated par- 



