702 



INDEX 



Water examination, biological, 640 

 physical, 640 



filtration of, 558 



hard, not injurious to health, S'^2 



pathology of, S'52, 553 



I)urification, 554 



by precipitation, 555 



by storage, 554 ■ 



chemicals used for, 555 



■ rendering potable by oxidation, s*"'! 



soft, ill-effects of, 552 



softening of , chemicals used for, 555 



solvent uses of, in diet, 563 



sources of, 544 



sterilization aided by storage, 554 



by electrical methods, 558 



by thermal methods, 558 



subterranean, 548 



classification of, 548 



transmission of cholera by, 205 



transport of, 551 



unfiltered, spread of schistosomiasis 



by, 250 



\Vatercre5s, dangers of, 572 



Water-pipes, iron, diminution in dia- 

 meter, 552 



Water supply pipes, dimensions of, 

 method of ascertaining, 546 



Weigert's inethod for staining micro- 

 organisms, 614 



WeiTs disease. See Spirochcetosis ictero- 

 hcemorrhag'ica 



Well and spring waters, classification 

 for drinking purposes, 650 



protected, plan of, 550 



— shallow, bacteriology of water from. 



647 



water in Khartoum, bacteriological 



examination, 643 

 Wells, deep, 551 



shallow, 548 



contaminated, use of, followed 



by t.vphoid fever epidemics, 550 

 contamination of, 549 



Whey, 568 

 Whipworm. 



tirus 

 White men, 



impossible. 



See Trichocephahis trichi- 

 existence in tropics 



racial 

 . 538 



Whitmore's disease, aetiology, 415 



common in drug-takers, 415 



■ definition, 415 



pathology and symptomato- 

 logy, 415, 416 



Widal reactions in diagnosis of typhoid 

 fever, 219, 611 



method of performance, 611, 612 



Wind and dust, exposure to, causing 

 l)inguecula i)terygium and ophthalmic 

 irritation, 510 



Women, men and children, food neces- 

 sary for, compared, 564 



XANTHOM.A areatum, 506 

 treatment, 506 



diabeticorum, 502 



lilanum, 502 



tuberosum, 502 



Xenopsylla cheopis (rat-flea), transmis- 

 sion of plague by, 171 

 Xerosis, 510 



among debilitated children, 510 



X-ray treatment of tropical ulcers, 505 



Yaws. See Framhoesia tropica 

 Yeast, infection in sprue, 357 

 Yeasts, staining of, 632 

 Yellow fever, blood condition in, 367 



course, crisis and termination. 



369, 370 



370 



definition, 365 

 diagnosis, 370 



differential, 370 

 in early stage, imported, 



disinfectant measures against. 



?>1^ 



■ endemic centres of, 366 



endemicity of, mean tempera- 

 ture necessary for, 539 



geographical distribution, 366 



immunity to, 368 



natural, in very young 



children, 368 



importation of cases into re- 

 gions free from Stegomyia callopus 

 not dangerous, 543 



incubation period, 369 



mortality, 370 



pathology, 367 



post-mortem findings in bodily 



regions and organs, 368 



prognosis, 370 



prophylaxis against, 371, 372 



Boyce's summary. 



372 



— spread of, dependent on pre- 

 sence of mosquitoes, 539 



factors necessary for, 371 



symptomatology, 369 



— transmission, mode of, 8 



treatment, 370 



bv alleviation of svm- 



370, 371 



ptoms, 371 

 b\- elimination of toxins, 



- dietetic, 371 



indications for, 370 



virus of, 366, 367 



carrier, 365, 366, 367 



vomit of, 368 



Yersin's serum in proph\laxis of plague, 

 T76 



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