SECTION E. 



PROTECTION AND CULTURE. 



I. INVESTIGATION. 



1. METHODS OF THE UNITED STATES FISH COMMISSION. 



a. Methods of work : 



Apparatus for collectiug 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.) 

 h. Eesults of work : 



Publications of the commission. 



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



Photographs, &g. 



II. PROTECTION. 



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



* Frotn man. 

 a. Game laws. 



** From artificial obstructions. 



h. Fish- ways :^ 



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, (Call's.) 



With contracting galleries, (Pike's.) 



With transverse sloping floors, (Steck's.) 



1 Classification proposed by C. G. Atkins. 

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