3IO DOMESTICATED TROUT. 



had grown up. But where were they? Domestic trout 

 ought to have been as plenty as codfish ; instead of that, 

 there were none to be had. 



I therefore made the growing of the young fish a severe 

 and unremitting study the first year, and was rewarded 

 with success ; not that I did not lose many young fry, for I 

 lost a great many, but I raised some, and in most instances 

 where they died I thought I saw a removable cause. I 

 now believed that time and study would prevent the diffi- 

 culties of the first year's growth, and proceeded to extend 

 my operations. ' The original hatching house was enlarged 

 into a building 16 feet by 24, and a large new hatch- 

 ing house, 60 feet by 27, was put up, with 500 feet of 

 hatching troughs. That fall over 100,000 trout eggs were 

 .laid down, beside 40,000 salmon eggs, which were sent by 

 the Massachusetts and New Hampshire Commissioners 

 to be hatched here for the Connecticut River. 



1868. 



The next spring (1868) the plan of the rearing box was 

 completed, the object of which is to protect the young fish 

 from accident, and from their natural enemies. It will not, 

 of course, feed them, or keep them from dying of diseases, 

 but it will save them from the two very prolific causes of 

 loss just mentioned, namely, accidents and natural enemies. 

 This spring, and during the winter, some of the salmon 

 eggs and young fry were, with the consent of the Commis- 

 sioners, sent to Professor Agassiz. They were the first 

 live specimens of the American Sahno salar that the great 

 naturalist had seen, and drawings were taken of them 

 for his projected work on the Salmonida? of this conti- 

 nent. 



During the same spring another pond was built, and a 

 few black bass introduced from Lake Champlain. There 

 were also 100,000 young bass hatched in some small arti- 



