Bull. U. S. B. F., 1927, Pt. II. (Doc 1021.) 



Fig. 4. — The counting weir situated just above the estuary 



Fig. 5. — Salmon passing through one of the gates oi the tounting 

 weir. Note the white-painted canvas fastened to the bottom, 

 which improves the visibility, and the wire leads, which re- 

 quire the salmon to pass over the canvas 



