Text-book of hygiene; a comprehensive treatise on the principles and practice of preventive medicine from an American stand-point . s coincident with the commencement and continuedoperation of the filter, as follows:— STORAGE AND PURIFICATION OF WATER. 89 Table XII. Death Record. General Diarrheal. Typhoid Av. Av. Av. previous previous previous 10 10 10 yrs. 1899 1900 yrs. 1899 1900 yrs. 1899 1900 October 153 138 144 5 2 5 4 4 5 November .... 162 138 135 3 0 1 5 0 4 December 194 148 133 6 1 0 7 1 0 1900 1901 1900 1901 1900 1901 January : 235 135 188 6 1 2 11 3 2 February 197 146 157 6 2 0 11 1
Text-book of hygiene; a comprehensive treatise on the principles and practice of preventive medicine from an American stand-point . s coincident with the commencement and continuedoperation of the filter, as follows:— STORAGE AND PURIFICATION OF WATER. 89 Table XII. Death Record. General Diarrheal. Typhoid Av. Av. Av. previous previous previous 10 10 10 yrs. 1899 1900 yrs. 1899 1900 yrs. 1899 1900 October 153 138 144 5 2 5 4 4 5 November .... 162 138 135 3 0 1 5 0 4 December 194 148 133 6 1 0 7 1 0 1900 1901 1900 1901 1900 1901 January : 235 135 188 6 1 2 11 3 2 February 197 146 157 6 2 0 11 1 3 March 215 180 164 5 5 1 12 3 1 April 197 202 156 4 1 0 9 5 1 May 173 152 139 3 0 1 4 4 1 June 159 112 145 10 7 1 4 1 3 July 191 162 142 39 27 11 4 3 0 August 162 116 134 21 16 14 7 6 3 September .... 148 125 139 i2 5 12 6 4 4 Total ...2186 1754 1776 120 67 48 84 35 27Reductions, per There has been no general sanitary improvement in the city inthis time other than the improvement of the water due to figures show facts, and should be susceptible to accurate inter-. tiORjF Filters , JVajhinvton. ELJL Fig. 7.—Showing Interior of Filter Recently Constructed inWashington, D. C. 90 TEXT-BOOK OF HYGIENE. pretation. My inference from them is, that, as a result of the purewater now being supplied, there is a better general condition ofhealth, as shown by a decided reduction in diseases caused by filthand disease-germs that arc* water-borne. The Albany filter has continued to give excellent results from asanitary standpoint. Slow sand-filters have been constructed in Prov-idence, E. I., Washington, D. C, Hudson, N. Y., Mount Vernon,X. Y., Far Rockaway, L. I., Ilion, N. Y., Yonkers, N. Y., Somers-worth, N. H., Ashland, Wis., Superior, Wis., St. Johnsbury, Vt.,Milford, Mass., Nantucket, Mass., Nyack, N. Y., Lambertville, ~N. J.,Salem, N. J., Eock Island, 111., Grand Forks, N. D.; and are in thecourse of construction in Phila
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