INDEX 



265 



German increased food production, 

 235 



phosphates, 30 



potash, 40, 165 



Germination of seeds, 4, 177, 184 

 Gilbert, 21, 33, 35, 82, 127 

 Gilchrist, 15, 193, 206 

 Gimmingham, 76, 348 

 Glover tower, 129, 132 

 Glucose, 4 

 Glue, 74, 157 

 Glycerine, 4 

 Glycine, 176 

 Golding, 81, 82 

 Graphite in cyanamide, 106 

 Grasby, 65 

 Grass, acreage of, 130 



lands, manures for, 13, 126, 184, 

 198, 221 



water in, 3 

 Grazing, impoverishment of soils by, 



210 



Grease from bones, 73, 173 

 Green, 47 



colour in leaf, cause of, 15 



parts of plant, 2 



house fumigation, 250 

 Grigioni, 103 

 Grimm, 31, 33, 35 

 Grinding mills, 38, 116, 127, 137 



rock phosphate, 135 

 Ground lime, 45 



limestone, 44 

 Grouven, 39 

 Guano, 27, 30, 71 

 Gussefeld, 35 

 Gypsum, 45, 149, 182 



in superphosphate manufacture, 

 142, 146, 149, 182 



HABER, 82, 89, 103, 171 



ammonia retorts, 91 



process for ammonia, 79, 89, 225 

 Half open saturator, 88 

 Hall, 1, 8, 21, 47, 82, 121, 159, 213, 



214, 238, 255, 257, 258 

 Hamilton, 65 

 Harger, 60 



Harper Adams College, 222 

 Hart saltz, 40 



Hastening setting in fertilizers, 182 

 Hay, acreage of, 130 



crop, 186, 204 



phosphates for, 130 



water in, 3 

 Heat evolved in mixing acid and 



phosphate, 140, 141 

 Heavy soils, 210 

 Heberlein, 248 



Hedge potash, 76 



Hellebore, 254 



Hendrick, 70, 76, 123, 159, 185, 



223 



Hepke, 172 

 Hercules, 1 

 Herepath, 33 

 Herring waste, 71, 110 

 Hibbert, 60 



Hide refuse manure, 116 

 Hiendlmaier, 87, 103 

 High cost of labour, effects of, 196 



grade superphosphate, 194 



illuminating power in gas, 51 



pressure for Haber process, 91 

 Higher powers of percentages, price 



curve involving, 194 

 Histidine, 176 

 Hobsbaum, 103 

 Hofmann, 87, 103 

 Hoof meal, 115 

 Hop manure, 75 

 Horn meal, 115 

 Horse bones, 73 



Hot acid in superphosphate manu- 

 facture, 144, 149 

 Humboldt, 71 



Humic nitrogen in bones, 176 

 Hungarian phosphates, 30 

 Huson, 37 

 Hutton, 33 

 Hutchinson, 46 

 Hydrated salts, 119, 162, 163 

 Hydrions in soil water, 7 

 Hydrocarbons in gas, 51 



in tar, 252 

 Hydrochloric acid, 66, 169, 171 



acid, use of, 157 

 Hydrocyanic acid in gas, 51 

 Hydrofluoric acid from superphos- 

 phate, 141, 145, 151 

 Hydrogen preparation, 90 



sulphide, 68, 85, 89 



sulphide in gas, 53 

 Hydrolysis, 4 

 Hygroscopic fertilizers, 150, 174, 196 



INCREASED yield of mutton by 



manure, 235 

 Indian apatite, 64 



basic slag, 64 



nitrates, 22, 24, 41, 46 



superphosphate trade, 134 

 Ingle, 21, 178, 257 

 Inglis, 82 

 Insect anaesthetics, 249 



attacks, prevention of, 239 



pests, 200, 219 

 Insecticides, 239, 243, 246, 249 



