APPENDIX. 185 



and most other fish which cannot be kept and do not 

 thrive in ponds, our information scarcely amounts 

 to anything. That grilse or young salmon spawn 

 the first year is a well authenticated fact, and it is 

 equally certain that they do not proceed so high 

 up the stream for this purpose as the larger fish. A 

 question is thence suggested : Do the young pro- 

 ceeding from the ova of the grilse, deposited at a 

 lower part of the stream, ever become salmon of 

 from twelve to thirty pounds' weight? the solution 

 of which is left to those who may have opportunity 

 to make the necessary observations. The following 

 fact may, however, throw some light on the subject. 

 Previous to the erection of a dam across the Co- 

 quet, at Acklington, ten or twelve miles from its 

 mouth, about sixty years ago, salmon were com- 

 monly taken in this river ; but since their progress 

 in spawning time towards its source has been inter- 

 rupted by the above mentioned dam, salmon are very 

 rarely caught there. This river abounds, in the 

 season, with salmon trout, or as they are frequently 

 called, bull trout, which are taken in great numbers 

 near Warkworth, about eight miles below Ackling- 

 ton, and the salmon is now as rare as the bull trout 

 was formerly. I am decidedly of opinion that these 

 trouts are of the same species as the salmon proper, 

 though unable to account for their not arriving at a 

 salmon's weight, fish of this species, in that part of 

 the country, are called salmon which weigh nine 

 pounds and upwards, those which are less being 

 termed grilse or gilse. The salmon trout, or bull trout 

 which are taken in the Coquet, mostly weigh from 



