live for some 



it , It has lone 

 been salt an*, fish- 



es lose their vitality if left in t > time an 



not impi s. uatrefages first ascertained this 



for the "ike and other fresh water fishes. Hoffmamif ' 

 says thfifct the sperms of Sc .n salt 



' 3 ) found Wall- 



die after one minute in t] 



In this connection the experiments of "uot ( '02) are 



very interest} . He toe ngnathus dumerilii 



- 

 from the a of the . . , id A careful not oo break 



eg£ membranes (these eggs were pn fertilizei ), 



just before si - - 3), but in no c ••• 



development £0 on . jut into 



Larvae ese too 



in forty-eight hours, I can confirm all his results. 

 I have fou s in segmentation rilJ on dividi 



for a short while, but that j all die. 



of 



discovery of TJr uot f * 02 ohn ('04), that the pouch 



and its contents act as a physiological placenta, offer the 

 explanation for the above pheno tena, - ryos, 



