SECTION E. 



PROTECTION AND CULTURE. . 



I. INVESTIGATION. . 



1. METHODS OF THE UNITED STATES FISH COMMISSION. 



a. Methods of work : 



Apparatus for collecting specimens, (see under B.) 



Apparatus for physical research. 



Appliances for working up results. 



(This should include a model of coast laboratory with all its 

 fittings.) 

 1). Eesults of work : 



Publications of the commission. 



Collections, (see under A, V to VIII.) 



Photographs, &c. 



II. PROTECTION 



2. PRESERVATION OF GAME, FISH, &c. : 



* From man. 



a. Game laws. 



** J^rom artificial obstructions. 



b. Fish-ways: 1 



Gap fish-ways. 



Trench, ditch, or "Cape Cod" fish-ways. 

 Oblique grove fish-ways : 

 Single groove. 

 Brewer's. 

 Mather's. 

 Step fish- ways : 



Box or pool fish-ways : 



Overflowing, (old style.) 



With passage-way cut down to the floor, (Smith's.) 

 With passage-way submerged, (Cail's.) 

 With contracting galleries, (Pike's.) 

 With transverse-sloping floors, (Steck's.) 



1 Classification proposed by C. G. Atkins. 



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