SEOTIOISr 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.) 

 &. Eesults of work : 



Publications of the commission. 



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



Photographs, &c. 



11. PROTECTION. 



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



* From man. 



a. Game laws. 



** From artificial obstructions. 



b. 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. 

 7 97 



