352 



INDEX 



Heating of bacteria beds, 240, 242 



Hendon, Ducat filter at, 240 



Hermite solution, 184 



Holding up, 283 



Horfield, sewage treatment at, 247 



Hospitals, discharges from, 172, 193 



Household waste, 5 



Humus, 96, 113, 123, 140 



Hydrogen, anaerobic cultivations in, 64 



,, production of, 96, 97 



Hydrolysis of organic matter, 14, 96, 99, 



105, 250 

 Hydrolytic tank, 267 

 Hypochlorous acid and hypochlorites, 180 



I 



Impression preparations, 69 



Incubation temperatures, 62, 64, 71 



Incubator tests, 52 



India, sewage disposal in, 134, 183, 195 



Indigo solution for nitrates, 43 



Indol, 91 



Infiltration of soil, 2, 3, 8 



Infusoria, 78 



Inoculation of beds, 75 



Intermittent filtration, 211 

 ,, irrigation, 144 



,, subsidence, 161 



Invertase, 104, 113 



Ireland, 20, 80, 170, 173, 222 



Iron, corrosion by chlorine, 182 

 ,, salts as precipitants, 158, 334 

 ,, ,, on sewage farms, 147 

 ,, sand as a filtering medium, 229 



Irrigaiion, Chap. VI., 132 

 ,, intensive, 143 



Irwell, pollution of, 4 



Italian rye grass, 138 



Ive's tank, 163 



J 

 Japan, sewage treatment in, 135 

 Jelly, nutrient for bacterial cultures, 62 

 ,, silica, 67 



K 

 Katabolic, lO'^, footnote 

 Killon's automatic regulator, 303 

 Kingston-on-Thames, sewage treatment at, 



152, 160, 161 

 Kjeldahl process, 4s, 108 



Lactic fermentation, 109. 113 

 Land filtration, Chapter VI., p. 132 



,, official requirements as to, 147, 149 



,, restoring valuable matters to, 149, 330 



,, of sewage farms, 134 

 Lanoline from waste wool fat, 336 

 Lawrence city, sewage treatment, 209 

 Leed:«, sewage treatment at, 224, 280 

 Legal actions for nuisance, 321, 326 

 Leguminous plants, 332 

 Leicester, sewage treatment at, 146 

 Leptomitus lacteus, 79 

 Leucine, 107 



Lichfield, sewage treatment at, 227 

 Liebig's theory, 202 

 Liernur process, 194 

 Lime, addition to sludge, 165 



,, application of waste, 135 



,, as a purifier, 155, 206 



,, effect of in soils, 134 



Lime, effects of in waters, 157 



,, soaps, 28 

 Limestone in filters, 264 

 Lipase, 104, 114 

 Liquefaction of gelatine, 62, 104 

 Liquefying organisms, 62, 70 

 Liverpool, pollution of wells by cesspools, 3 

 Local Government Board, 8, 19, 147, 148, 



277. 314. 321. 327. 348 

 London County Council experiments, 72, 



74, 88, 98, 159, 210, 212, 322, 327 

 London sewage, 152, 209 

 LoaS on ignition, 33 

 Lowcock's filter, 236 



M 

 MacConkey's medium, 67 

 Madras sewage farms, 135 

 Maidenhead, sewage experiments, 87, 185 

 Maidstone, 8 



Malvern, Lowcock's filter at, 237 

 Manchester experiments, 54, 152, 183, 224, 



273-279. 313. 317 



Maltose, 104 



Manganates, 177 



Manganese, use of compounds of, 176-179 



Manufacturing refuse and effluents, 32, 55, 

 261, 333-348 



Manure, decompositions of, 128, 330 

 ,, from sewage, 11, 152, 160, 330 

 ,, treatment in farmyards, 5 

 ,, value of sewage as, 41, 331 



Marsh gas [see Methane) 



Massachusetts experiments [see America) 



Materials for filters and bacteria beds, 227 

 ,, size of, 229, 248 

 ,, comparative efficiency, 227, 230 



Media for bacterial cultivations, 62, 123 



Mechanical separation of solids, 152 {see 

 Screening and Sedimentation) 



Melbourne, 115, 152 



Melosiraand Meridion, 80 



Mersey and Irwell Board, 39, 56, 273 



Merthyr Tydvil sewage disposal. 144 



Mercaptan, 105 



Merulius lachryraans, iii 



Metallic salts for sewage treatment, 174 

 ,, surfaces as sterilizers, 176 



Metallophilic organisms, r6o 



Metals, action of chlorine on, 182 



Meters, 24 



Methane, 105. 109, no 



Meihylamines, 108 



Micrococci, 73 



Micrococcus aquatilis, 77 

 ,, candicans, 75 



,, ureas, 73 



Microscopical exammation of bacteria, 69 



Mineral constituents of sewage, 40, 43, 332 



Middens, 2, 10 



Midden heaps, 2 



Midden tov\ns, 12 



Milan, disposal of sewage at, 143 



Mixing of sewage hquids, 272, 276 



Modules for regulating flow, 282, 316 



Moncrieff [see Scott-Moncrieff) 



Motility of bacteria, 69 



Moulds, 113 



Moule's earth closet system, 11 



Mouras' Automatic Scavenger, 205, 249 



Mudbanks, 4, 319 



Mucor, 113 



Mueller s process, 204 



