100 riSH HATCHING. 



to 60°. This was too great a heat for the 

 young fish, and the weakest of them began 

 to look very sickly. I however immediately 

 placed a large block of ice in the earthenware 

 tank which suppHes their water, and thus 

 lowering the temperature, the fish showed 

 their gratitude by becoming lively again. 

 Luckily I was able to obtain ice quickly, but 

 I thought (while waiting for it) of the ex- 

 periments in carrying salmon to Australia, 

 and what would have happened if " The 

 Field " window bad been the " between- 

 decks " of an Australian clipper just passing 

 through the tropics, and the young fry had 

 just been hatched out of the egg — what grief 

 and .sorrow it would have been to their human 

 nurse if he found his stock of ice was all 

 exhausted. Anyhow, we have learnt that 



