Nevin. — Fifty Years' Experience in Fish Culture 217 



years, and the eggs and fry from our stock of breeders 

 last season were as strong and vigorous as any we had 

 ever taken. One might naturally think that if there is 

 anything to the inbreeding of fish, results would be the 

 same with rainbow as with brook trout. 



We intend to increase our capacity and keep a much 

 larger stock of brown trout in the future than we have in 

 the past, as the fry planted in our streams have done ex- 

 ceptionally well. I do not find from observation that the 

 brown trout are any more destructive in the way of can- 

 nibalism, of which they are accused, than any other va- 

 riety of game fish. Their food qualities are almost equal 

 to those of brook trout and their ability to fight will 

 always give the angler a thrill. If the fish is of any size, 

 the fisherman will have a tale to tell of a hard-fought battle 

 and the time it took to land the catch safely. 



Diseases of fish are many, and an ounce of prevention 

 is worth a pound of cure. Salt has been the cure-all for 

 most of our trouble with fish in the past. We have found 

 another remedy, however, which we think is an improve- 

 ment over salt, if properly used, for the removal of fungus 

 or the killing of copepods on the gills of the fish, or in 

 fact any germs that attack fish. If taken in time the use 

 of potassium permanganate, one-half grain to a gallon of 

 water, varying slightly according to the age of the fish, 

 will bring results. A bath of a couple of minutes at a 

 time in this solution about twice a day for several days 

 if necessary, will kill most of the germs and keep the fish 

 free from disease. Hereafter in the spring and fall we 

 shall give all of our brook trout a bath at sorting time, 

 hoping to thus keep them free from all germs. 



To be successful in brook trout work, one must be 

 alert and wideawake at all times in watching over the stock 

 on hand. Close attention must be given to the feeding 

 and care of the fish, or trouble is bound to result. A care- 



