Poplar wood sawdus t 138 



Potamogeton k'i 



Potash fertilization 169 



Potash in plant control 160, 161 



Potato pulp 133, 13^, 138 



Potatoes 133, 134, 138, U3 



Poultry eggs H2 



Pre-extended brood 83 



Pre-extension (nursery) pond , 8^* 



Preface 1 



Pre-heater 81 



Primitive nutrient substances 27 



Procuring of stock fishes 78, 191 



Producers, original 27 



Production biology, principles 1 



Production conditions in the pond , 27 



Production costs 189 



Production, daphnide 172 



Pix>duction power, natural 126 



Producti on rearing 77 



Production of table-trout , • 124 



Productivity appraisement, (bonitization) 40, 126 



Productivity, determination of natural, see bonitization , 40, 126, 127 



Productivity test on carp races ,, 75 



Protection regulation for animals and plants 193 



Protein 18 



Protein, digestible 18 



Protein, pure 18, 19 



Protein ratio 18, 19 



Protein, total 18, 19 



Protozoan-parasitic diseases 203 



Pseudomonas fluoreacons 46 



Pseudomonas plehniae 201 



Pseudomonas punctata 202 



Ptomaines (cadaveric toxins) 27, 135 



Pulverizing machine, Siemens' large 161* 



Pulverizing machine, Siemens' small 161« 



Pure culture 74 



Putrefied mud (rotted mud) 42, 59 



Putrefaction toxins (Ptomaines) 27, 135 



Quick lime, calcium oxide I64 



Quolsdorf tenches 90, 91 



Quotient of nutrition 132 



Quotient, shore •«. 47 



Quotient, space 48 



Race rearing, methods 77 



Races, characteristics of 73, 74, 75 



Rachitis 197 



Rainbow trout 13, 95, 96», 124, 191 



Rainbow trout , coloration of the ., 96 



Rainbow trout, flesh quality of 97, 98 



Rainbow trout, food requirement 24 



Rainbow trout eggs , development duration 116«- 



Rainbow trout , introduction of I05 



Rainbow trout, preferences 97 



Ranunculus ^3 



Rat, brown (NoiMay) , 192 



Rats 192 



Rattulus 32 



Reaction in the intestinal canal 17 



Reaction of the water , 5I 



Rearing for production 77 



251 



