EFFECTS OF ALCOHOL ON GERM CELLS OF FUNDULUS. 40! 



TABLE IX. 



COMBINED RESULTS OF FIVE SERIES OF EXPERIMENTS SHOWING DIFFERENCES IN 



EFFECTS OF ONE MINUTE AND FIVE OR MORE MINUTES' TREATMENT OF 



THE SPERM OF Finidulus WITH FIFTEEN PER CENT. ALCOHOL. 



lead to the elimination of the weaker lot, and while the percentage 

 developing is much smaller, subnormal individuals are rarer than 

 in the control. 



(d) Selective Action with Treatment of Ten Per Cent. Alcohol 

 Three separate lots of spermatozoa were treated with two tenths of 

 a cubic centimeter of ten per cent, alcohol in sea water for such a 

 length of time that only a few were left active in the dish. A 

 lot of eggs were then mixed with the treated drop of milt and 

 allowed to stand five minutes for fertilization. In one instance 



TABLE X. 



SHOWING THE EFFECTS OF TEN PER CENT. ALCOHOL IN SEA WATER ON THE 



SPERM OF Fundulus. 



