58 I. IJIMA. 



Embryos artilicitiUy pressed out remain perfect]}' quiet. Oiily 

 once I saw an embryo moving slowly by means of its cilia, after a pre- 

 liminai-y pause. 



Eggs from the gall-bladder and intestine of a cat have b:en kept 

 from December last until this diy for over five months, but I observe 

 no changes in them. Nor did the artificial warmth of an incubator 

 enhance the hatching out of embryos. 



Tokyo, June 5th, 188G. 



