INDEX 



889 



Pathogenic bacteria in food, 488 



in milk, 401 



in sewage, 282 



in soil, 666 



in water, 665 

 Peas, bUght, 595 



canned, 466 



sterilization, 466 

 Pebrine, 656 

 Pellagra, 495, 813 

 Pelomyxia palustris, 15, 16, 32, 33 

 Pemmican, 456 

 PeniciUium, 41, 45, 47, 50, 164, 507, 



558, 725 

 - brevicaule, 52, 175 



camemberti, 52, 201, 203, 437 



expansum, ^i, 52 



glaucum, 42 



roqueforti, 52, 436 

 Pepsin, 190, 194, 198', 200 

 Peptone, transformation, 322 

 Percentage index, 712 

 Period of incubation, 680 

 Periplaneta americana, 635 



orientalis, 92 

 Perithecium, 39 

 Peroxidase, 202 

 Perry, 530 



Pestularia vesiculosa, 46 

 Phagocytic, index, 712 



theory of immunity, 722 

 Phagocytosis, 711 

 Phosphine, 172 

 Phosphorus, cycle of, 186 



in soil, 357 

 Phototaxis, 224 

 Phototropism, 224, 231 

 Phycomycetes, 38, 40, 59 

 Physical influences of microorganisms, 



207 

 Physiological groups, 310 



of bacteria in soil, 308 



variation, 161 

 Physiology of microorganisms, 141 

 Phytotoxins, 178 

 Pickles, 554 



Pigment, 175 



bacteriopurpurin, 177 



carotin bodies, 177 



chromogens, 176 



chromophorous bacteria, 176 



chromoporous bacteria, 176 



fluorescent, 175 



parachrome bacteria, 176 



prodigiosin bodies, 177 



solvents, 177 

 Plague, 776 

 Plant diseases (See diseases of plants), 



588 

 Plant food in soil, 297 



groups, 12 

 Plasmodiophora brassicae, 608, 610 

 Plasmodium, 136, 834 



falciparum, 834 



malariae, 834 



vivax, 834 

 Plasmolysis, 208 



colloidal substances, 210 



salt solutions, 209 



sugar solutions, 209 



water, 208 

 Plastids, 20 



Pleuro-pneumonia, bovine, 804 

 Pneumomycosis, 724 

 Pneumonia, 747 

 Poisoning, by cheese, 493 



chemical nature of, 232, 495 



classes of food, 491 



due to saprophytic changes, 491 



by fish, 491 



by foods, 488 



ice cream, 493 



infections transmitted, 491 



by meat, 491 



by milk, 493 



by sausage, 491 « 



by shell fish, 493 



by vegetables, 494 

 Poisons, 232 

 Pombe, 533 

 Potassium in soil, 360 

 Poultry refrigeration, 473 



