144 Salmon at the Antipodes. 



"From this experiment, it appears also that 

 the first spawning of the salmon takes place 

 at 18 months old, the same as that of the 

 trout, and that the number of eggs of the 

 first spawning is about 200. If these ova 

 are less highly coloured than those of large 

 fish caught in the open waters, this is probably 

 from the flesh of the young salmon not having 

 yet acquired the tint that it would have at 

 a greater age. This removes the last ob- 

 jection that has been made to the raising 

 of salmon in close ponds ; but to succeed in 

 this industry, it is necessary to know how to 

 choose conditions favourable for carrying it 

 out." 



In the experiment here described, it would 

 have been much more satisfactory if the trout 

 had not been present in the pond, and, 

 singularly enough, no mention is made of 

 their having been caught in the net with the 

 salmon. I have tried to ascertain the final 

 result of this interesting experiment, but have 

 failed to find in the Transactions of the Society 

 any further reference to it. All the authorities 

 agree, however, that salmon detained in fresh 

 water beyond the time of their migration to 



