PROBLEMS OF FISH AND FISHING 



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in gallons and weight of water. Any size can be figured, 231 cubic 

 inches (weighing 8.34 pounds) being a gallon. 



Demonstration aquaria are usually built into the walls so as to be 

 lighted from above and viewed through the glass from inside the 

 room. This arrangement can be imitated by setting the aquaria on 

 suitable supports just outside the windows, on the window sills, darken- 

 ing the outer glass (or making the ends and outer sides of slate). 



When we begin to realize the value of aquatic biology, we shall build 

 our aquaria into the basement walls, and then, by proper placing and 

 grading of the building, we can have abundance of room for either still- 

 water or running-water aquaria, under conditions as normal as those of 

 natural ponds and streams, with which to study all manner of prob- 

 lems. If the aquaria were figured into the original plans, they might 

 cost nothing and the basement walls might be even less expensive 

 than the usual solid construction of stone or brick. 



Our commissioner of fisheries says l : " This is a wide field ; I do 

 not know of any more promising field in the government service than 

 in the culture of fish. The possibilities of making new discoveries, 

 especially in the line of intensive breeding and selective breeding, are 

 almost inexhaustible. I would expect that a tremendous boom to the 

 fish industry of the entire country would be given by a fisheries school 

 such as this if established here." 



The still-water aquarium is the only kind recommended for ordi- 

 nary school use ; running water is not at all necessary for most fishes, 



1 H. M. Smith, California Fish and Game, Vol. I (July, 1915), p. 189. 

 (From remarks before the Pacific Fisheries Society, Seattle, on the plan of 

 establishing a school of fisheries in connection with the University of 

 Washington on a par with schools of forestry and agriculture, mining 

 and commerce.) 



