Hygienic Laboratory bulletin. no. 76-78, 1911, Issues 76-78

amount assay average bacteria basin board of health Buffalo Harbor canal cent Chart Cleveland coli compared cubic curve December dilution discharge disease District of Columbia Dunkirk east Endo's medium ergot examinations factors February feet filter plant filtered water filtration fluid extract following table furnished gallons high typhoid infection January Joseph Goldberger July June lactose lactose bile lactose bouillon lake current Lake Erie Lockport M. J. Rosenau method miles milk Mill Creek Mohawk River months Niagara Falls Niagara River North Tonawanda onset outbreak Painesville percentage period persons plates polluted water population Potomac River prevalence of typhoid public water supply reported rise safe water samples Sept sewage pollution sewage-polluted water sewer sewer outlets shore showing southwest Street summer tion Toledo Total typhoid death rate typhoid fever Typhoid Fever Deaths typhoid rate unfiltered uterus Wardell Stiles Washington waterworks intake weather winds York