104 Salmon at the Antipodes. 



or about the 20th November; and although the 

 summer has then set in, the water of the 

 streams has not yet been greatly raised in 

 temperature, and, the hatching-out going on 

 with great rapidity, the young fish have made 

 very considerable growth before the great 

 heat of summer sets in. This fish having 

 different habits from the Salmo salar, and 

 spawning about the end of summer, the young 

 fry are better able to resist a high temperature, 

 which, if injurious to the ova in hatching, is 

 certainly, up to a certain point, favourable to 

 the growth of the young salmon. 



It is a well-ascertained fact, that trout in 

 cold streams or ponds do not grow at the 

 same rate as those of the same age in warmer 

 waters. 



In hatching English fish, I should recom- 

 mend that water be used of as low a tempera- 

 ture as can be procured, whether from spring 

 or brook. With Californian salmon 60 deg. 

 is not at all dangerous to the ova, but higher 

 than this is probably unsafe ; 55 to 57 deg. 

 I have found to answer well with them, 

 and the fry will live in water having a brisk 

 current up to 70 deg., or even to 75 deg. But 



