37° 



REPORT OF THE FOREST, FISH AND GAME COMMISSIONER. 



These diseases are caused by sewage and the drainage from barnyards, 

 pig pens and similar nuisances. They are responsible for the death of 

 thousands of fine trout whenever and wherever an epidemic occurs, and 

 there is little that one can do to remedy the situation except to remove the 

 cause. A great flow of fresh water will ameliorate the condition of brown 

 trout affected by the disease, but as soon as the fish are slightly overcrowded 

 in ponds as they are apt to be in the spawning season, the trouble breaks 

 out with renewed and increased virulence. 



Sometimes brook trout and brown trout are afflicted with " sore throat ' 

 in the spring. This condition, I am informed, has been successfully over- 

 come by the use of common loam. 



At Constantia young fish of various kinds — trout perch, yellow perch 

 black bass, pike perch, etc. — ■ are attacked by a bacillus that destroys one 

 or both of the eyes. The amount of destruction is sometimes frightful in 

 the spring and summer months. No remedy is known, in fact next to 

 nothing is understood about the nature of the bacillus. 



There is a great field for work for bacteriologists in our fish cultural 

 establishments, but all of them appear to be so much occupied with other 

 subjects that they cannot heed our " cry from Macedonia." 



