INDEX 



ACCESSORY food bodies, 94, 

 96 sqq. See also Vitamines 

 and Auximones 

 Acid soils, 171 $<?<?. 

 America and inoculation, 53 



sqq. 

 and nitrobacterine, 136, 



137 



Amides, 133 



Ammonia from manure, 27 

 Annus mirabilis, 19 

 Antiseptics and soil organisms, 



3 49 

 Auximones, 94, 96 sqq., 158, 



191 



and animals, 117 

 derivation of, 112 

 test for, 113 sqq. 

 Azotobacter, 28, 88, 89, 112 

 sqq., 139, 152 



Bacillus radicicola, 60 sqq., Si, 

 82, 88, 139, 152 



Bacteria in the soil, numbers 

 of, 25. See also Nitrogen- 

 fixing organisms, Nitrifying 

 organisms, Azotobacter, Ba- 

 cillus radicicola, Humogen, 

 Humus, etc. 



Bacterized peat. See Humo- 

 gen 



Beriberi, 99 sqq. See also De- 

 ficiency diseases 



Beyerinck, 89 



Board of Agriculture, 54 sqq. 



Carbohydrates, 133 

 Carbon as plant food, 5 



dioxide from manure, 27 

 Cavendish and nitric acid, 6 

 Chelsea Physic Gardens, ex- 

 periments, 1 02 

 Condensation, 129, 130 

 Clostridium pasteurianum, 89 



Coal consumption in Eng- 

 land, 3 



Cooke, 1 60 



Coutts on Kew experiments, 

 141 



Crookes on the nitrate prob- 

 lem, 5 



Dachnowski on peat, 31 sqq. 



Deficiency diseases, 99 sqq. See 

 also Beriberi, Scurvy, Vita- 

 mines, etc. 



Dehydration, 128 sqq. 



Detmer and humus, 80 



England and the food-supply, 



ii sqq. 

 Eykman and beriberi, 99 



Fats, 133 



Fielding and England's food- 

 supply, 12 sqq. 



Food-supply in Europe, n sqq. 

 Funk, 99 sqq. 



Hellriegel, 50 sqq. 



Holmes, experiments by, 144 



sqq., 153, 163 

 Hopkins, in sqq. 

 Humic acid, 69 sqq. 



colloidal properties 



of, 92 



substances. See Humus 

 Humogen and its results, 81 



sqq., 179 sqq., 225 sqq. 

 application of, 169 sqq. 

 cautions for use of, 197 



sqq. 

 model experiments with, 



200 sqq. 



preparation of, 150 sqq. 

 prizes gained with, 184, 



194. 195 

 testing of, 135 sqq. 



241 



