The sewage question : comprising a series of reports being investigations into the condition of the principal sewage farms and sewage works of the kingdom / from Dr. Letheby's "Notes and chemical analyses".

  • Letheby, H. (Henry), 1816-1876.
Date:
1872
Catalogue details

Licence: Public Domain Mark

Credit: The sewage question : comprising a series of reports being investigations into the condition of the principal sewage farms and sewage works of the kingdom / from Dr. Letheby's "Notes and chemical analyses". Source: Wellcome Collection.

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    COMPOSITION OF HUMAN EXCRETA, AND THE QUANTITIES OF EACH PEE HEAD PER DAY, OF THE POPULATION. Investigations of ^Yay, Lawes, Liebig, and others, p. 131; Table of weights of urine and faeces of cbildren and adults, 132 ; Amounts of solid matter contributed daily by a town population of 10,000 persons, 133 ; Average composition of London Sewage, 135; Weight of the solid constituents of the sewage furnished by a town population of 1,000 persons. COMMEECIAL AND AGRICULTURAL VALUE OF SEWAGE AND NIGHT-SOIL. Theoretical and practical value, -p. 139 ; Discrepancies as to the value of Sewage per ton, 140 ; Readiness of farmers to appreciate the value of manures, and agricultural im- provements, 141 ; Their disinclination to take sewage, 141 ; History of sewage irrigation fallacies, 142; Name of towns which adoj)ted the fallacies, 145; Conse- quences of the error, 145 ; Dr. Voelcker's opinions of irrigation, 146 ; The source of the fallacy respecting the commercial and agricultural value of sewage, 147 ; Com- parative value of sewage and other manures, 147 ; The £1 Dorado of enthusiasts, 148 ; Table of the composition and value of the constituents of raw and dry excremental matters ; Usefulness of water iixigation at proper times and places, 150 ; Value of sewage if it could be taken only when required by the land, 151 ; Places where it is thus taken—Edinburgh, Worthing, Carlisle, 152 ; Difficulties of using sewage at all times, 152 Differ- ences of opinion as to the right time of using it, 152 ; Differences of opinion as to the method of using it, 152 ; Hose and jet method, 153 ; Moveable carriers, 153 ; Ridge and furrow system, 153 ; Necessity for changing the whole system of farming, v/here adopted, 153 ; Ex- perience of farmers in favour of concentrated portable manures, 154; Value of manures from feeding on dif- ferent food, 155 ; Differences of opinion as to the quality of the soil best suited for sewage, 155 ; Absorption power of clay and other constituents of soils, 157 ; Compositions of sewage before and after irrigation at P''gl->y. 159 ; Differences of opinion as to the quaiitity of sewage to be applied to an acre of land, 160; Impossibility of deciding the question, 166 ; Sanitary requirements entirely opposed to agricultural profit, 166; Differences of opinion as to the crop which is most