HATCHING THE EGGS. 

 Mr. Stephen H. Ainsworth's table is as follows : 



Although results somewhat varying from these fig- 

 ures will be obtained in different waters, they may, 

 nevertheless, be regarded as a safe guide in general. 

 I will only add that in my own experience I have 

 found that the yolk sac requires more time for its 

 absorption in proportion to the time of incubation ; I 

 should say quite a third more. 



As the development of the embryo advances, the 

 care of the eggs will become more and more inter- 

 esting. They will, however, lose their bright crys- 

 talline look, as they lie in the water, and will assume, 

 collectively, a dull brownish hue ; but when exam- 

 ined separately, it will be seen that this does not 

 6* i x 



