Investigation of the food-animal supply, see also bonitization 40 



Iron 58, 152, 196 



Irradiation, ultra-violet 117 



Isodynamics of the foodstuffs 19 



Jointed scythe, Roessing 15A, 154**-, 155 



Juggler (cybister) 34 



June beetle (cockchafer) 133, 143 



June f ingerlings 122 



Juvenile dress of trout 93, 96 



Kidneys 141 



Kite 193 



Kralena oxygen generator 186 



Kypholordosis 197 



Lake trout (Salmo trutta, v. lacustris) 93 



Large-plant eaters 34 



Larvae, caddis-fly 11, 12, 13, 33, 34, 36 



Larvae of Cyclops species (Naupliae) 32 



Larvae, insect 11, 13, 35 



Larvae , lepidoptera 34 



Larvae, midge fly 11, 12, 13, 33, 34, 35, 36, 38, 39, 84, 198 



Larvae, neuroptera 33 



Larvae of sand fly (Uelusina) 33 



larvae of small caddis flies ( Triaenodes ) 33 



Larvae of stone flies 33, 35 



Larvae of tufted midges (Sayomyia) 12, 33, 34 



Late fishing-out of nursery ponds 83 



Lean fish-meal 139 



Leanness 7 



Least pond area • 78, 125 



Leather carps 72 



Leech, see fish-leech 35, 183, 209 



Legume seeds • .« 137 



Lemna • 42 



Length, ratio to weight 9 



Length-weight curve 10» 



Lentil crabs, see Burycercus 11, 12, 32, 34 



Lentospora, see whirling disease.. 63, 85, 95, 99, 102, 121, 122, 123, 124, 132, 135, 206* 



Lepidoptera larvae 34 



Leptocerus • 33 



Letting through 85, 175 



Leuciscus rutilus, (Roach) 140 



Level trough 113*, 114 



Leveling 62, 63 



Ught 27, 47, 122 



Light arrangement for the brood house 114 



Ligula simplicissima (strap worm) 193, 209 



Lime , bicarbonate of 51 



Lime, burned (Calcium oxide) I64 



Lime, caustic (Calcixim oxide) I64 



Lime content 53 



Lime content, adaptability to • 35 



Lime content, evaluation of • 57 



Lime content of the soil 60 



Lime distributer, see lime mill 166, 166* 



Lime enrichment 55 



Lime, kinds of 163, 164 



Lime marl 163 



Lime mm 166, 166* 



Lime, mixed 1^^ 



Lime reactions or effects » • 162 



Lime requirement of ponds and of soil • 165 



244 



