. The sanitation of cities. he discovery of the choleragerm, or bacillus; that of Eberth and Gaffkyon typhoid fever, with the discovery of itsspecific bacillus; and that of the Bacillus coliby Escherich, gave a new purpose to waterpurification, and sewage treatment. These dis-coveries late in the last century led to the wide-spread adoption of water filtration, with the re-sult that typhoid deaths were reduced by thismeans in many of the great European cities, to avery small fraction of their former number. Thiswork also led sanitarians to conclude that, witha universal adoption of this means
. The sanitation of cities. he discovery of the choleragerm, or bacillus; that of Eberth and Gaffkyon typhoid fever, with the discovery of itsspecific bacillus; and that of the Bacillus coliby Escherich, gave a new purpose to waterpurification, and sewage treatment. These dis-coveries late in the last century led to the wide-spread adoption of water filtration, with the re-sult that typhoid deaths were reduced by thismeans in many of the great European cities, to avery small fraction of their former number. Thiswork also led sanitarians to conclude that, witha universal adoption of this means of protection,t3^phoid, cholera, and other water-borne diseaseswould in time entirely disappear from the deathstatistics of nations. Water purification was an English first filters, as mentioned before, were placedin 1829 and the whole supply of London wasordered filtered in 1849—following which the in-troduction of filters in other cities made rapidprogress. In 1860, English engineers installed the first 45. 5 o OJ ~- o 3 ^ c ^ OJ (U on z o ?^ Ti <V o zz x: X c 1- x: . a3 cu5 _,^^ .. oc c c c ^ > r3 ?—^ <-) ;3 CU D. ^ rt X3 ?^ O LU S li. ^ c °ci ai^V, 46 ^be purification of Mater Supplies filters on the Continent at Altona, Germany, laterat Berlin, and at several other German cities. TheAltona filters are famous as having prevented thecholera epidemic from spreading to that city in1892, although it raged in Hamburg, an adjoiningcity which was not served with filtered of these cities at that time took theirwater supply from the Elbe River into which alsothey discharged their sewage, without filtered its water but Hamburg did present, both cities filter their water suppliesbut neither of them finds it necessary to go furtherwith sewage treatment than medium fine screen-ing. The Hamburg sewage screen plant hasscreens with A inch clear
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Keywords: ., bookcentury1900, bookdecade1920, bookidcu3192400497, bookyear1921
