, Photograph from Henry O'Malley 



NEAR VIEW OF A FISH WHEEL : COLUMBIA RIVER, OREGON 



The salmon wheel reaches its highest perfection in the Columbia River, but is used also 

 in parts of Alaska. It consists of a series of net compartments arranged in the form of a 

 huge wheel, supported on a scow or on a crib-work, cement, or masonry base. The wheel 

 can be used only in rapid water, as it is turned by the current and catches the fish swimming 

 upstream. The above wheel, with a solid cement base, is operated at The Dalles. 



and St. Louis and as far south as At- 

 lanta. 



AMERICANS FUTURE SUPPLIES OF AQUATIC 



ANIMALS 



Thoughtful people everywhere are ask- 

 ing the question whether our wonderful 

 aquatic resources will continue without 

 essential impairment and be an important 

 source of food and wealth for genera- 

 tions yet to come, or whether the unmis- 



takable decline which has befallen some 

 of our most valuable products is but a 

 forerunner of a condition to which all of 

 our water animals are inevitably and 

 speedily tending. We may profitably in- 

 dulge in a little speculation regarding this 

 question, with the history of the older 

 nations to guide us. 



There is every reason to feel assured 

 that our great high-sea fishing grounds 

 will remain productive and continue to 



577 



