The Filtration of Public Water-Supplies
The Filtration of Public Water-Supplies
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. . These laborers and sailors, especially on the smaller river-boats, had an enormously greater proportionate amount of cholera than others. . . . These laborers do not live exclusively near the water, but to a measure in all parts of the city.*' (And in Altona and Wandsbeck. — A. H.) " Altona had 5 deaths from cholera December 25 to January 4, and 19 January 23 to February 11, and no more. As noted above, this is attributed to the water-supply, and to defective filtration in presence of frost.... . . .
" The cholera could never have reached the proportion which it did, had the improvements in the drinking-water been earlier com- pleted." Further accounts of the water-supplies of Altona and of Ham- burg and of the new filtration works at the latter city are given in Appendices VII and VIII.
Digitized by VjOOQIC APPENDIX III. 233 APPENDIX IIL METHODS OF SAND-ANALYSIS.
(From the Annual Report of the Massachusetts State Board of Health for 1892.) A KNOWLEDGE of the sizes of the sand-grains forms the basis of many of the computations.
What to read after The Filtration of Public Water-Supplies?
You can find similar books in the "Read Also" column, or choose other free books by Hazen, Allen, 1869-1930 to read onlineMoreLess
To quickly assess the difficulty of the text, read a short excerpt:
. . These laborers and sailors, especially on the smaller river-boats, had an enormously greater proportionate amount of cholera than others. . . . These laborers do not live exclusively near the water, but to a measure in all parts of the city.*' (And in Altona and Wandsbeck. — A. H.) " Altona had 5 deaths from cholera December 25 to January 4, and 19 January 23 to February 11, and no more. As noted above, this is attributed to the water-supply, and to defective filtration in presence of frost.... . . .
" The cholera could never have reached the proportion which it did, had the improvements in the drinking-water been earlier com- pleted." Further accounts of the water-supplies of Altona and of Ham- burg and of the new filtration works at the latter city are given in Appendices VII and VIII.
Digitized by VjOOQIC APPENDIX III. 233 APPENDIX IIL METHODS OF SAND-ANALYSIS.
(From the Annual Report of the Massachusetts State Board of Health for 1892.) A KNOWLEDGE of the sizes of the sand-grains forms the basis of many of the computations.
What to read after The Filtration of Public Water-Supplies?
You can find similar books in the "Read Also" column, or choose other free books by Hazen, Allen, 1869-1930 to read onlineMoreLess
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