95 



[^^3] THE FISHERIES OF SWEDEN. 



tomperatnre of tbe water, near the surface and also at a deptli of ton 

 fatlioms. I have also caused the superinteiulents at some of the Skaiie 

 fishing stations to keep a journal of the temperature of the water near 

 the surface, and a record of the wind, current, and the daily yield of 

 the fisheries; but I have not asked them to give the exact number of 

 fish caught everyday, because this would involve considerable trouble 

 and hardly seems necessary. Even for obtaining a correct idea of the 

 course of the salmon fisheries and of the circumstances which influence 

 them, such observations are of great interest. On some of our salmon 

 streams the superintendents of the fisheries, or special observers, have 

 taken observations relative to the depth ot water in the stream its 

 temperature, and such matters. ' 



