. Bacteriology and mycology of foods. Food. 270 WATER HYGIENE d ^ es' IV. © 3G 34 32 30 28 26 24 22 20 18 16 14 12 10 8 6 4 2h 0 - ây ^ \ - ^ / "" "â¢â¢-\ \CJ^/y - Y^%^ ^ - - \ /â¢I \ - - -x\ . ~ - Y<^ - - GROWTH OF WATER FILTRATION AND DECREASE OF TYPHOID FEVER DEATH RATE IN THE REGISTRATION CITIES OF UNITED STATES ^ C'- - - \ % y^ â - \ \ \ N \ - - Vv - " \ - - 1!â ^ x. - - ./' V - - ./" - - ^^ ^ - ^o-t ml ^ - - -;^i\tO U:i (a^i. - - â - - - o tH CM CO -^ lO -< o CD o e3s cs o (M CO â <* tH rH tH OJ C5 OS r-l rH rH 30 34 32 30 28 26 22 20 18 16 14 12 10 8 6
. Bacteriology and mycology of foods. Food. 270 WATER HYGIENE d ^ es' IV. © 3G 34 32 30 28 26 24 22 20 18 16 14 12 10 8 6 4 2h 0 - ây ^ \ - ^ / "" "â¢â¢-\ \CJ^/y - Y^%^ ^ - - \ /â¢I \ - - -x\ . ~ - Y<^ - - GROWTH OF WATER FILTRATION AND DECREASE OF TYPHOID FEVER DEATH RATE IN THE REGISTRATION CITIES OF UNITED STATES ^ C'- - - \ % y^ â - \ \ \ N \ - - Vv - " \ - - 1!â ^ x. - - ./' V - - ./" - - ^^ ^ - ^o-t ml ^ - - -;^i\tO U:i (a^i. - - â - - - o tH CM CO -^ lO -< o CD o e3s cs o (M CO â <* tH rH tH OJ C5 OS r-l rH rH 30 34 32 30 28 26 22 20 18 16 14 12 10 8 6 4 tH OS Fig. 59.âRelation of Water Filtration to Typhoid Fever. (After Johnson.) AVERAGE TYPHOID FEVER DEATH RATE FOR FIVE YEARS BEFORE AND FIVE YEARS AFTER FILTRATION ALL CITIES OF U S. OVER 100 000 POPULATION IN 1915 â â â Bl Pittsburs: \' a.^'/^a\ Albany U.^^^./^^ coiumbiis v:^v/;A Philadelphia YfTT^^^^A. , ,,.. Z&4,y., IiOUlSVillO Cincinnati Washington Atlanta Beading Indianapolis New Haven l,:,:^,i^;\/'/;\ New Orleans ^W//^A Toledo WW/Mt/MM Patersoa ^2^ Scranton f^T^ Providence ^^^'^^/^ mm Explanation â â i Before Filtration X^rf/^^ After Filtration Average of Above M^J^2Wm Average Reduction =61 ^ Total Population of Above Cities 5,450,000 Fig. 60.âTyphoid Fever Death Rate in American Cities. (After Johnson.). Please note that these images are extracted from scanned page images that may have been digitally enhanced for readability - coloration and appearance of these illustrations may not perfectly resemble the original Tanner, Fred Wilbur, 1888-1957. New York, John Wiley & Sons, Inc. ; [etc. ,etc. ]
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Keywords: ., bo, bookcentury1900, bookdecade1910, booksubjectfood, bookyear1919
