168 MAKING A FISHERY. 



upon them, the supply hatch was set full open, 

 and a plank removed at the lower hatch to 

 reduce the depth and give the strongest rush of 

 water through the stew. The next day these two 

 were found dead, but after this no further casual- 

 ties occurred, and no more diseased fish were to 

 be seen. We were assured that there was no sign 

 of fungus on the rest of the same batch of 

 yearlings bred by the same gentleman, and 

 remaining in his streams. It should be 

 remarked here, that many of the weakly fish 

 before death appeared to be bent laterally, as 

 if they had received some injury to the spinal 

 column. 



The question having been exhaustively dis- 

 cussed and fully considered, the consensus of 

 opinion was that the growth of fungus com- 

 menced on the fish that had been injured, and 

 did not appear to spread to the perfectly 

 healthy ones in the stew. Every fish, however, 

 affected by the fungoid growth succumbed, and 

 neither of the remedies tried — neither immer- 

 sion in brine nor giving a greater rush of water — 

 appeared to be of avail to a fish once attacked 

 by the disease. On the other hand, the fact 

 that the growth did not spread to the healthy 

 fish in the stew gave fair grounds for the 

 inference that among healthy stock it is not 

 contagious. The primary cause of the trouble 



