Blood freshening in trout 105 



Blood meal 85, 133, M2 



Bloodworm (Sanguinicola) 207 



Blood yeast 133, 142 



Blue-green algae 45 , I54 



Body ratio of the carp 74 



Bohemian carps 75 



Bone malformations 2(77 



Bone splinters in the food , 25 



Bonitization (appraisement of productivity) 40, 126 



Bonitization (beaker glass), fertilizer requirement 168 



Bookkeeping 188 



Bosmina 11, 32, 84 



Bottom animals , eaters of , 11 



Bottom animals (fauna) 28, 35 



Bottom fauna and fish yield 29 



Box trap 192 



Boxes for fishes 180 



Brachionus 32 



Brain 133, Ul 



Branchiomyces 200 



Brandstetter's counting plate, see counting plate 119 



Brans 138 



Breeds, selection of 77, 105 



Brewer ' s grains 138 



Bristle worms 13, 31 



Brood apparatus , California 109, 110 



Brood boxes , stock strength of 122 



Brood diseases 84 



Brood enemies 121, I64, 192 



Brood extending ponds 85, 158 



Brood feeding, see trout-brood feeding 149, 150» 



Brood house, light arrangement for the 114 



Brood pot (perforated cooking pot) 112 



Brood, pre-extended 83 



Brood robbers 34 



Brood space 114 



Brood transportation 184 



Brooders, source of supply for Zuger glass 112 



Brooders, Zuger glass 113* 



Brooding boxes , water requirement of 122 



Brook char, eastern (Salmo fontinalis) 98 



Brook trout eggs , development duration 115 



Brook trout in the Baltic Sea 94, 105 



Brook (brown) trout 13, 93, 94*, 124 



Brook (brown) trout, coloration of 94 



Brook (brown) trout, color of the flesh 95 



Brook (brown) trout, spawning of 95 



Brook (brown) trout, stomach contents of 12* 



Brooklime (Veronica bee cabunga) 43, 152 



Brooks in winter, natural nutrition of 121 



Brown (Norway) rat 192 



Brown-water pond 30 



Buffer 51 



Bulbous reeds 42 



Bull rush (Scirpus lacustris) 42 



Burned (quick) lime, calcium cocide I64 



Butomus (water gladiole ) 42 



Bythotrephes 32 



Cadaver meal 133, 141 



Cadaveric toxins (ptomaines ) 27 



Caddis fly larvae 11, 12, 13, 33, 34, 35, 36 



232 



