720 INDEX OF SUBJECTS. 



Poisoning, by fish, 415 Protection against disease, nasal cavity,546 



by foods, 411 natural antibacterial substances, 550 



ice cream, 416 natural antitoxins, 549 



infections transmitted, 413 normal agglutinins, 551 



by meat, 415 . hemolysins, 551 



by milk, 416 precipitins, 552 



by sausage, 415 skin, 545 



by shell fish, 416 stomach, 546 

 by vegetables, 416 Proteins, bacterial, 535 



Poisons, 173 as food, 91 



Pombe, 443 in soil, 251 



Potassium in soil, 290 toxic, 122, 417, 535 

 Powdered milk, 366 Prototoxoids, 558 

 Precipitate, 572 Protozoa, classification, 76 



Precipitinogen, 572 functions, 70 



Precipitins, anti-, 572 locomotion, 71 



auto-, 571 flagella, 71 



co ~> 573 myonemes, 71 



forensic use, 572 metabolism, 71, 82 



iso-, 571 reproduction, 71 



mechanism of, 571 anisogamous, 74 



normal, 571 binary division, 72 



specific inhibition, 572 chromosomes, 74 



Precipitoid, 572 conjugation, 74 



Predisposition to disease, 542 copula, 74 



Preservation by chemicals, 402 copulation, 74 



by cold, 395 developmental cycle, 75 



by drying, 374 encystment, 75 



by heat, 381 isogamous, 74 



Preservatives, alcohol, 176, 178, 408 macrogametes, 74 



benzoic acid, 177, 408 merozoites, 74 



boric acid, 407 microgametes, 73 



effect on system, 406 mitosis, 74 



formaldehyde, 176, 179, 408 schizogony, 73 



formic acid, 408 self-fortilization, 74 



hydrogen peroxide, 179 sporozoites, 73 



inorganic, 407 zygote, 74 



nitric acid, 407 general, 68 



nitrous acid, 407 groups, 10, u 



organic, 408 influence on organisms in water, 202 



ozone, 179 parasitism, 75 



preserving by chemical action, 406 commensals, 76 



by physical action, 406 facultative parasites, 76 



salicylic acid, 177, 408 obligatory parasites, 76 



sodium chloride, 176, 406 saprozoic parasites, 76 



sulphurous acid, 180, 407 structure, 69 



vinegar, 177 chromatin, 70 



wood smoke, 409 cytoplasm, 70 



Pressure, influence of, 168 ectoplasm, 70 



Protection against disease, conjunctiva, endoplasm, 70 



547 linin, 70 



cutaneous orifices, 545 nucleus, 70 



genito-urinary tract, 547 organellae, 7 1 



inflammatory processes, 548 technic, 80 

 intestines, 547 Protozoal groups, 10, n 

 lungs, 546 Pseudo-yeasts on grapes, 421 

 mouth, 546 Ptomains, 114, 115 



