288 



E. E. JUST. 



June 26, 9:40 to 10:20 A.M. Eggs from each lot examined 

 for cytolysis with the following counts : 



About twenty-three hours after treatment eggs of both the 

 optimum (between 35 and 40 seconds exposure) and the over- 

 exposed groups show high percentages of cytolysis. This re- 

 sult, however, should not be taken alone for as shown in other 

 observations over-exposed eggs early show 100 per cent, cytol- 

 ysis while optimum and under-exposed eggs are still intact. 



If we tabulate the figures given in these seven protocols one 

 may see at a glance that the shorter exposures to butyric acid are 

 markedly beneficial in protecting the egg against the normal 

 cytolytic action of sea-water. 



TABLE I. 



No. of Dish. 



C. Discussion. 



In the original observations the eggs were exposed to one c.c. 

 of M/IO butyric acid plus fifty c.c. of sea-water for twenty sec- 

 onds. Struck with the remarkable longevity of these eggs on re- 



