44 FISH AND GAME. 



POLLUTION. 



In view of the increased output of fish from the State 

 hatcheries it is essential that the streams and ponds be made 

 fit to receive young fish. In order to supply suitable grounds 

 unnecessary pollution of our streams must be eliminated. The 

 Commission has accumulated definite data upon the pollution 

 of the fishing streams in Massachusetts, and efforts are being 

 made to eliminate all types of such as are detrimental to fish 

 life. It is realized that certain streams are so saturated with 

 pollution that it would be practically impossible to reclaim 

 them, and that in many instances radical enforcement of the 

 existing laws would result in economic loss and involve the 

 Commonwealth in endless litigation. Nevertheless, two things 

 can be accomplished, (1) the prevention of further pollution 

 from manufacturing and sewage sources, and (2) the elimina- 

 tion of unnecessary pollution upon the streams of potential 

 fishing value. 



FISHWAY CONSTRUCTION. 



One of the problems which this Commission has to meet is 

 the installation of proper fishways, particularly upon the ale- 

 wife streams of the coast. Your Commissioners are considering 

 requiring the installation of adequate fishways wherever neces- 

 sary for the welfare ot the fisheries. We expect to furnish 

 definite directions for construction, with blue prints in each 

 case, and the owners of dams will be required to build fishways 

 satisfactory to this Commission. 



We take this occasion to say that in the main we have 

 found owners of dams and water privileges ready and willing 

 to co-operate with us. In turn, we have endeavored to impress 

 upon one and all that our desire is to install these fishways in 

 proper manner, with as little expense to those affected as 

 possible. 



