The sewage question: comprising a series of reports: investigations into the condition of the principal sewage farms and sewage works of the kingdom. From dr. Letheby's 'Notes and chemical analyses'. Repr., with additions, from the 'Med. press and circular'.1872 |
Common terms and phrases
alum alumina ammonia annum average carbonate cent charcoal chemical chloride of lime Chloride of sodium clay closets composition Constituents per gallon contained Craigentinny crops defæcated sewage deodorising deposit discharged disinfecting dissolved dry earth effluent water excrement excreta experiments fæces feet long filter flocculent flow foul gallons a day gallons of sewage grains of lime grains per gallon guano irrigation land Letheby liquid London sewage magnesia manure matter in solution matter Mineral ditto Matters in suspension meadow ment midden mixed night-soil nightsoil nitrogen obtained offensive Organic matter Mineral outfall Oxygen required patent phosphate of lime phosphates of alumina phosphoric acid population potash precipitate produce proportion Raw sewage removed river River Lea River Medlock River Soar rye-grass salts samples sanitary says sewage farm sewage water sewer soil solid matter subsiding tanks substances sulphuric acid supernatant superphosphate suspended matters tons of sewage Tottenham town unsewaged grass urine Voelcker weight
Popular passages
Page 181 - When cut grass was given alone the result was very unsatisfactory ; but when oilcake was given in addition the amount of increase upon a given weight of animal within a given time, and for a given amount of dry substance of food consumed, was not far short of the average result obtained when oxen are fed under cover on a good mixed diet.
Page 100 - Commission appointed to inquire into the best mode of distributing the Sewage of Towns, and applying it to beneficial and profitable uses.
Page 118 - In fact, the advantages of the system, as summarised by him, are as follows : — " 1. The earth closet, intelligently managed, furnishes a means of disposing of excrement without nuisance, and apparently without detriment to health. "2. In communities, the earth-closet system requires to be managed by the authority of the place, and will pay at least the expenses of its management.
Page 74 - Any liquid which in 100,000 parts by weight, contains whether in solution or suspension, in chemical combination or otherwise, more than -05 part by weight of metallic arsenic.
Page 196 - ... speaking, no harm follows. Here, however, let me invite you to pause ; for if, without due consideration, you adopt any one of the gigantic schemes now in vogue, you will scatter these eggs far and wide ; you will spread them over thousands of acres of ground ; you will place the...
Page 118 - ... 4. The earth system of excrement removal does not supersede the necessity for an independent means of removing slops, rain-water, and soil-water.
Page 87 - The water may then be allowed to flow away into a river, or be disposed of in any other way, and the sediment or mud allowed to accumulate at the bottom of the tank. In some cases it is preferable to add the compound of manganese to the water after the sediment produced by the other ingredients has been allowed to subside. The sediment will be found to possess the power of precipitating a further quantity of sewage ; it must therefore be pumped or otherwise taken from the tank and mixed with fresh...
Page 161 - Report of the Commissioners appointed in 1868 to inquire into the best means of preventing the pollution of Rivers (Mersey and Ribble basins).
Page 7 - LETHEBY'S Notes and Chemical Analyses. 4s. 6d. " These Reports will dissipate obscurity, and, by placing the subject in a proper light, will enable local authorities, and others interested in the matter, to perceive the actual truths of the question, and to apply them practically.
Page 98 - THIS invention of improvements in the treating of sewage consists in causing the phosphoric acid and ammonia of such matters to be precipitated in a comparatively insoluble state, by the addition of magnesia, or a magnesian compound, at or about the same time that the deodorization of the sewage is effected by the addition of some deodorizing chemical agent, which will not decompose ammonia or its salts.