Subjects 



Trawls (Continued) 



deep-water trawling off the coast of 

 Washington and Oregon. Sep 292. 

 359 



floating. FL 343 



Gulf of Maxico shrimp trawl designs. 

 FL 394; Sep 316 



handling trawler- caught fish. Sep 192 



kite rigs for otter trawl gear. FL 302 



mesh size and construction as a factor in 

 releasing small fish and shrimp 

 from. FL 382; Sep 257 



motor trawlers with freezing and proces- 

 sing systems on board. FL 278 



otter, description of. FL 302, 368; 

 Sep 21. 49 



otter, experiments on the escape of under- 

 sized haddock throueh. SeD321. 335 



otter, John N. Cobb's shellfish explora- 



tions ifTAlaskan waters, 1950. Sep 278 



otter, modifications in gear to curtail 

 destruction of undersized fish in. 

 IR 24 



otter trawl explorations in Philippine 

 waters. RR 25 



otter trawl fishery, north Pacific, brief 

 history. Sep 292 



otter trawl net for small fishing boats. 

 FL 49 



otter trawlers, description of Japanese. 

 FL 389 



otter trawlers, graph of average annual 

 production. FL 167 



otter trawlers, new rig for high opening. 

 FL 199 



releasing small fish and shrimp from. 

 FL 382; Sep 257 



rope cod ends. Sep 101 



shrimp. Gulf of Mexico. FL 368, 394; 

 Sep 316 



shrimp trawling difficulties on Oregon 

 fishing trip, 1950-1951. FL 406 



stream, fishing in the North Sea. SSR-F 13 



winter trawl fishery off the Virginia and 

 North Carolina coasts. IR 10 



Trepang ( See Sea cucumbers). 

 Trimethylamine (See Spoilage). 



Tripod derrick for small fishing vessels 

 Sep 135 



Trolling (See^ Fishing equipment and methods). 



Trolling gurdy. Sep 198 



Tropical fish for aquariums (See also Aquarium): 



care. FL 411 



dealers, partial List of. FL 193 



species. FL 165, 411 

 Trotlines: 



construction, operation, and maintenance 

 (Chesapeake Bay type). FL291 



Trout (See also Diseases; and under individual 

 common names): 



aeration of waters for. PFC 35 D 



ameba parasitic. Doc 987 



brood stock, feeding. PFC 50 C 



brood stock, selecting and developing. 

 PFC 25 A 



brook, absorption and digestion of 

 carbohydrates. PFC 51 C 



brook, brown and rainbow; coefficient of 

 condition in comparison of hatchery 

 and native. PFC, v. 13, no. 4 B 



brook, eastern, use of urethane anesthesia 

 in spawning. PFC, v. 16, no. 4 I 



brook; fats, supplemental. PFC, v. 14, 

 no.l D 



brook, metabolic rate of. PFC, v. 16. no. 2 C 



brook; propagation, artificial. Doc 955 



brook and brown, mortality rates of. 

 PFC. v. 15. no.4 B 



brown, fingerlings; dietary observations. 

 PFC. v.ll, no. 2 H 



brown, on all-meat diet; some pathological 

 symptons. PFC, v. 14, no. 3 D 



brown, should they be stocked. PFC, v. 15, 

 no. 3 H 



California investigations. PFC 35 B 

 care. Doc 1061; IR 22, 35; RR 12 



celebrated case of trout versus average 

 angler. PFC 11 A 



cod liver oil in diet. PFC, v. 10, no. 2 H; 

 v.ll, no. 2 C 



columnaris in. 

 no.4 G 



PFC V.14, no. 3 C; v. 15, 



242 



