208 CHARLES R. STOCKARD AND GEORGE N. PAPANICOLAOU 



14. THE CONTRASTED QUALITIES IN THE CONTROL AND THE 

 ALCOHOLIC SERIES 



The earlier reports on these experiments have given in the 

 general text the various differences between the alcoholic and 

 control lines; the case is made much clearer, however,- if all the 

 contrasted qualities be arranged together in summary fashion. 

 In Pearl's recent report on the influence of alcohol inhalation on 

 the progeny of the domestic fowl, he has given a concise arrange- 

 ment of the differences between the records of the experimented 

 and control lines. The several qualities he has compared such 

 as mortality records, fertility, abnormalities, etc., are the same 

 as those considered in our previous papers. We have here con- 

 structed a similar table to the one used by Pearl to show 

 the qualities contrasted in the former sections of this paper. 

 Definite numerical values have been presented for fourteen dif- 

 ferent qualities studied in the two groups of animals. Several 

 of these qualities are closely related, such as weights after dif- 

 ferent periods of growth and the mortalities calculated at dif- 

 ferent periods, yet these are stated separately since they were 

 measured in this manner and help somewhat to give a clearer 

 analysis of the entire problem. 



Table 10 shows the qualities measured. The first column of 

 figures are the records from the control, the second column are 

 the alcohoHc records. In the last column a — sign indicates 

 that the alcoholics are inferior to the control for the given quality ; 

 a zero, that the ^wo groups are similar in the given respect, and 

 a -f sign would show that the alcoholics are superior to the 

 control. It is seen at once that the alcoholic series suffers by 

 comparison in every case except one, and in this case the two 

 series are equal on account of an earlier unusually large difference. 



The alcoholic guinea-pigs are less productive, giving litters 

 of smaller size than the normal, their matings more often result 

 in failure to conceive; associated with these two facts there is a 

 higher early prenatal mortality which is the only quality in- 

 cluded in the table that cannot be numerically expressed for 

 reasons brought out in previous pages. 



