Subjects 



Fishing ports: 



Gloucester. FL 192; Sep 138 



key to (1945). FL 167 



Fishing vessels ( See Vessels, fishing and 

 research). 



Fishways: 



Bonneville, passage of shad. SSR-F 94 



Bonneville, success during first year of 

 operation. PFC 45 A 



fish screens in irrigating diversions. 

 PFC 45 C 



for small streams. FL 92 



plans for constructing small fish ladder. 

 PFC 45 B 



shad. SSR-F 65. 94 



Flax: 



commercial fisheries, report on tests made 

 in. FL 177 



description. FL 111; Sep 54 



Floating canneries (See Factory ships). 



Florida ( See also Landings): 



fish and shellfish. CB 37; Doc 1013 



phosphorus content of waters along west 

 coast of. SSR-F 122 



red tide. FL 420; SSR 46 



Flounder: 



Paralichthys and related genera in 

 American waters. FB 71 



spawning and hatching operations, imple- 

 ments in. PFC V.9, no.3 J 



winter, embryonic and larval stages of. 

 Doc 927 



winter, food of young. Doc 907 



Fluctuations in abundance (See particualr 

 species). 



Fluorine: 



naturally occurring in canned salmon and 

 mackerel, study of. IR 44 



Fluorophotometer: 



use of pyrex test and culture tubes as 

 solution cells with. Spe 236 



Folic acid ( See Fishes - food). 



Food, Drug and Cosmetic Act ( See Laws and 

 Regulations, fishery products). 



Food consumption: 



of deep-sea fishermen to determine ration 

 points needed. Sep 90 



Food fishes (See also Fish culture): 



mud-puppy, enemy of. EC 49 



propagation and distribution of (See Fish 

 culture). 



Food for fishes ( See Fishes - food). 



Food value ( See Fish as food). 



Foreign trade: 



import classification and duties. FL 417 

 in edible fishery products. FL 421 

 trade agreements. Sep 283 



Formalin: 



for bacterial fin rot. PFC 53 C 



for external protozoan parasites. PFC 48 A 



treatments pass new tests. PFC 49 D 



Fouling of ships' bottoms. Doc 1031 



Founders of fish culture. PFC 16 C, 18 D, 21 C, 

 25 C, 28 D, 29 E, 43 C, 55 C 



Four-horned snails: 



description. FL 323 



France, fisheries. FL 381 



Freezing ( See Frozen fish). 



Fresh fish: 



and shellfish preferences of household 

 consumers. FL 407, 408, 409, 410 



buying manual. Cir 20 



196 



