FISHERIES 



Baltic: 189 



Czechoslovakia: 109 



Denmark: 297 



Drift nets: 26, 255 



Echo -sounding: 11, 14, 17, 18, 65, 

 96. 97, 183, 188, 195, 216, 

 228, 229, 230, 231, 237, 238, 

 246, 249, 252, 253, 255 



Electrical fishing: 71, 108, 117, 

 121, 145, 151, 152, 153, 

 154, 155, 184, 190. 191, 201, 

 240, 294 



Finkenwarder: 89 



Fischlupe: 11, 17, 18 



Fish meal: 258 



Germany: 30, 185, 204, 296 



Herring quality determination: 301 



Herring trawls: 55, 189, 193. 244, 

 245. 247, 248, 296, 297 



Hokkaido: 133 



Indian Ocean: 77 



Japan: 25. 133. 268 



Mesh measurements: 54. 75. 224 



Mid-water trawl: 12. 51. 52. 58, 

 59. 62, 63 



Miscellaneous fishing gear: 19. 20, 

 22. 23. 61, 162 



North Pacific: 25 



North Sea: 178, 193, 297 



Nylon nets: 22 



l»erlon lines: 131 



Role of hydrobiology: 163 



Salmon: 26 



Saran nets: 61 



Sea temperatures: 217 



Set nets: 26 



Shetland Islands: 89 



Shrimp: 98 



Sisal nets: 64 



Spain: 217 



Spiny lobster: 175, 176 



Trawling gear: 1, 15, 16, 21. 50. 51, 

 53, 55. 56, 57. 106, 159. 182, 

 189, 191, 220, 227, 232, 234, 

 235, 236. 238, 239,285, 286 



Tropical fish: 77 



Tunny: 30, 145, 190 



Underwater sound: 60 



Use of artificial light: 23, 144, 

 209, 254 



Use of sound pressure waves: 254 



Vessel tank tests: 283 



World distribution: 177 



Yap: 268 

 FOULING 



Black Sea: 105 

 LIMNOLOGY 



Basin of Cordoba: 73 



Krzyzaki Lake: 42 



Mexico: 277 



Patzcuaro Lake: 277 



Poland: 42 



Zooplankton: 43 

 MARINE MAMMALS 



Aerophotography: 84 



Cetacea; 168 



France: 168 



Pinnepedia: 39, 84, 196. 199. 

 257 



Russia: 39, 84, 257 



Seals: 39, 84 

 MARINE PLANTS 



Algae: 118 



Eel grass: 27 



Japan: 27 



Phytoplankton: 289 



Zostera marina : 27 



Zostera nana : 27 

 MARINE WORMS 



Nereis pelagica : 32 



Rotifers: 299 

 MOLLUSKS 



Argentina: 206 



Cultivation: 41 



Cuttlefish: 13, 104 



Fecundity: 158 



Growth: 158 



Loligo vulgaris : 116 



Maximum size: 157 



Mussels: 83, 137, 212 



Mya arenaria: 293 



North Sea: 13, 104, 116 



Ommatostrephes saglttatus : 116 



Oyster: HI, 137, 206, 278, 279, 280 



Oyster culture: 136 



31 



