THE EXPERIMENTAL MODIFICATION OF GERM 

 CELLS. III. THE EFFECT OF PARENTAL ALCO- 

 HOLISM, AND CERTAIN OTHER DRUG INTOXI- 

 CATIONS, UPON THE PROGENY^ 



RAYMOND PEARL 



Maine Agricullural Experiment Station 



\ SEVEN FIGURES 



CONTENTS 



I. Introduction 241 



II. The fertility and hatching quality of the eggs from alcoholized par- 

 ents 242 



III. Total breeding capacity 250 



IV. Dates of hatching of Fi chicks 254 



V. Mortality of F, chicks 256 



VI . The sex ratio in the Fi progeny 262 



VII. Hatching weight of Fi progeny 265 



VIII. Growth of the Fi progeny 269 



IX. Deformities in the Fi progeny 277 



X. Mendelian characters in the Fi progeny 278 



XI. Discussion of results 279 



XII. Simimary 394 



XIII. Appendix 398 



1. INTRODUCTION 



In this paper it i.s proposed to discuss the effects, so far as 

 any are observable, of the alcohohzation of one or both of the 

 parents upon the progeny in the first generation using the do- 

 mestic fowl as material. Different characters of the progeny 

 will be considered, and as before primary attention will be given 

 to such characters as admit of quantitative expression. 



A detailed account of the experimental methods used, the 

 specific problems attacked, the breeding of the foundation stock 



^ Papers from the Biological Laboratory of the Maine Agricultural Experi- 

 ment Station. No. 102. 



241 



THE JOURNAL OF EXPERIMENTAL ZOOLOGY, VOL. 22, NO. 2 



