of popular food, but our space in this island is too con- 

 fined to enable us to deal with other than the best we can 

 have, and I doubt, except in a few solitary cases, if any of 

 the Corregoni fall under this head. 



The introduction of Golden Tench and the varieties of 

 Carp are not considered in this paper, as the acclimatization 

 of fishes has been treated merely in relation to Sal- 

 monidae. 



DISCUSSION. 



Mr. WlLMOT (Commissioner for Canada) said he rose 

 with great pleasure to move a vote of thanks to Sir James 

 Maitland for the very lucid and instructive Paper he had 

 read, for he felt satisfied that much benefit would be 

 derived from it. He was a deep lover of the science of 

 fish culture, believing it to be one of the means by which 

 the population of the earth hereafter would derive much 

 benefit in the way of food and wealth. It was well known 

 that the waters of almost every country which had been 

 largely inhabited had become very scarce of fish, but this 

 result was brought about by the greed and avarice of 

 mankind almost entirely, not in consequence of the pre- 

 datory habits of other fish which frequented the same 

 waters. In any new country an abundance of fish was to 

 be found in the rivers and waters, showing that the balance 

 of nature was evidently correct ; that though fish fed on 

 fish, they did not exterminate one another ; but the moment 

 man stepped in with his engines of destruction, the fish 

 were reduced to such an extent that this great Inter- 

 national Exhibition had been established for the purpose 

 of devising means whereby this description of food could 

 be increased. He regretted to find that, to some extent, 



E 2 



