REPORT OF COMMISSIONER OF FISH AND FISHERIES. CVII 



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(4) That it bo prohibited to throw orto allow to pass into the water any garbage, 



lime, waste from gas works, or other deleterious substances from manufacturing or 

 other establishments. 



(5) That commercial fishing be limited to tidal waters, and be so restricted therein 

 as to insure au ample run of salmon and other anadromous fishes to their respective 

 spawning-grounds. 



(6) That uniform regulations be adopted for the protection of the salmon, trout, 

 and other useful fishes throughout the fresh waters of the system. 



(7) In case the measures above suggested are carried out, it is recommended that 

 joint action be taken to increase the supply of salmon by artificial propagation. 



(8) It is recommended that all natural obstructions which impede the passage of 

 salmon to important waters adapted to their spawning, such as the fiill near the 

 mouth of the Aroostook River, bo examined with reference to improving the condi- 

 tions for the distribution of that species. 



ST. CROIX RIVER SYSTEM. 



(1) That the disposal, through the medium of the water, of all kinds of sawmill 

 refuse be prohibited throughout the entire river system. Sawdnst is the only kind 

 of such refuse now understood to be disposed of in this manner, and its retention on 

 land can undoubtedly be provided for at comparatively slight expense, as has been 

 done in other places. 



(2) That all extraneous material encumbering the channel of the river in tidal 

 water between the Calais-St. Stephen Bridge and The Ledge, and resulting from 

 the deposition of sawmill refuse, be removed. This measure is refj^uested in the 

 interest especially of navigation, but there is no doubt that the fisheries would also 

 be benefited thereby. We do not consider, however, that such a step would be 

 justifiable while the practice of allowing said refuse to escape into the river still 

 continues. It would also be of great advantage to the lisheries if the beds of sawmill 

 refuse occurring between Union Dam and Fourth Dam, above tidal waters, could be 

 removed to the extent of providing at least a wider and more direct channel for the 

 passage of salmon. 



(3) That the sewage from the St. Croix Cotton Mill be disposed of in such manner 

 as to prevent any harmful influence upon the salmon in that A-icinity during their 

 ascent of the river. 



(4) That the tanneries be prohibited from using the streams adjacent to them for 

 the disposal of tan bark, tan liquor, fleshings, hair, or other refuse which may be 

 deleterious to fishes. All liquids from the washings of the hides containing any 

 harmful ingredients should l)e purified before Iteing allowed to enter the stream. 



(5) That all fishways and passageways through the several dams be placed in good 

 repair and be modified where necessary to insure their greater efficiency, and that 

 subsequently they be maintained in proper condition and their approaches kept 

 clear of drift materials. The construction of all new dams should be subject to 

 Government authority, and should conform to such requirements in each case as the 

 circumstance may warrant. 



(6) TJjat in the case of all log-driving dams provision be made to keep one or 

 more of the gates open at all times when their use is not actually required in con- 

 nection with the driving of logs. 



(7) That in those streams to which the salmon resort for spawning purposes all 

 sources of pollution be restrained and all obstructions and existing impurities be 

 removed as far as ]>ossible. 



(8) That net fishing be prohibited throughout the fresh waters of the system. 



(9) That the capture of salmon in the neighborhood of their spawning-grounds 

 and in the approaches to fishways, or by any means except hook and line, be 

 prohibited. 



(10) That appropriate and uniform regulations be established with respect to all 

 classes of fishing in the fresh waters of the system, the same having reference to 

 methods and extent of fishing, close seasons, etc. 



