lake, causing a lack of oxygen in the water. It may be of interest to state that 

 no planting of grayling in waters containing "Dolly Varden" or bull trout, (Sail 

 velinus Malma) has ever been successful. As the last named species is very can- 

 nibalistic, an inference is easily drawn as to the reason for failure. 



At present all the efforts of the Commission with respect to grayling are 

 directed to stocking the streams where originally found, the two lakes where the 

 plantings have been successfully made and an occasional experiment in new 

 waters, where it is hoped that they may flourish. 



Fish and Game Clnbs. 



Much assistance is given your Commission by Fish and Game Clubs in all parts 

 of the State, as well as by individuals interested in maintaining present conditions 

 or restoring same to a more desirable one. 



Thus, the clubs apply for fry and receive same at the nearest railroad station to 

 the streams to be stocked, return the cans to the railroad, furnish information as 

 to violations of the fish and game law, build up a law abiding spirit in communities, 

 and are instrumental in furnishing valuable information as to streams and lakes, 

 as well as rendering assistance in planting of duck food and in making reports of 

 conditions of game, game birds, and the presence of predatory animals. It should 

 be possible through local clubs to put every nearby stream under local super- 

 vision, obtain reports concerning results of plantings at stated intervals and at 

 the same time have on such streams suitable places prepared for the reception 

 of fry whereby the loss will be reduced to a minimum. Such places, preferably in 

 small streams, can be easily made by making a small dam of rock which does not 

 prevent the natural flow of the stream but only retards it, so that a pool is formed 

 where food will accumulate from the flow above. 



We strongly urge the formation of clubs and that they keep a record of the 

 plantings made, the stream in which and the time when made so that this informa- 

 tion may be later available for purposes of comparison. 



Irrigation Ditches. 



rt has been known for many years that irrigating ditches destroy many fish. 

 \o method for preventing this destruction has been found which is inexpensive and 

 which involves little trouble. The Utah screen, devised for this purpose, was 



Near Belt, on the Great Northern 



(25) 



