INDEX 



Z79 



Carbohydrates, denilrification 

 favoured by, 185 ; potash required 

 for production of, 166 ; required by 

 nitrogen-fixing organisms, 35, 1 71 



Carbon bisulphide, 202, 241 



Carbonic acid, assimilation of, 6, 

 14 ; excretion of, by roots, 290 ; 

 in soil water, 143, 149, 156, 287 



Carnallile, 160 



Cartilage, 108, 154 



Castor cake, 242, 248 



Catch crops, 274 



Chalk, 252 



Cellulose, fermentation of, 187 



Cercosporium melonis, 88 



Cheshire, use of bones in, ill 



Chinchas guano, 231 



Chlorophyll, 14, 173 



Christmas Island, 1 16 



Cinereals, 24 



Citric acid solution as solvent, 126, 

 132, 143, 149, 165 



Cleveland iron ore, 127 



Clover, effect of potash on, 171 ; 

 manures for, 325 ; value of lime 

 to, 261 ; value of, in rotation, 33, 



295, 323 



Clover sickness, 34, 297, 324 



Club root, 259 



Coal, nitrogen in, 58 



Colour, relation to iron salts, 270 



Compensation for unexhausted 

 fertilisers, 354 



Composition affected by manuring 

 and season, 83, 86 



Composition of, ash of wheat, 264 ; 

 average crops, 22 ; basic slag, 

 129; bone manures, iii ; clover 

 ash, 268 ; excreta, 181 ; farmyard 

 manure, 202 ; gas lime, 266 ; 

 gases in dunghill, 188 ; guanos, 

 248 ; lime, 255 ; litter, 182 ; 

 London dung, 207 ; Peruvian 

 guano, 230, 233; plant, 13; 

 sewage sludges, 247 ; Stassfurt 

 salts, 161 



Condition in soil, lOI, 2I0 



Continuous growth of crops on same 

 land, 296 



Conservative systems of farming, 302 



Coprolites, discovery of, 13, 1 14, 

 121, 153 



Corn marigold, 254 



Cotton, manures for, 336 



CoUon cake, damaged, composition 



of, 248 

 Cow, composition of excreta of, 181 

 Crookes, Sir W., on fixation of 



nitrogen, 42 

 Crust guanos, 1 16 

 Cyanamide, 38 

 Czapek, 2gi 



Damaraland guano, 235, 248 

 Danish barley experiments, 366 

 Daubeny, 114 



Davy, nutrition of plants, 6, 104 

 Defiocculation due to, nitrate of 

 soda, 54 ; potash salts, 176 ; salt, 

 269 

 Defoe, use of the word manure, i 

 Deh^rain, 187 

 Denitrification, 185, 305 

 Diffusion of soluble salts in soil, 288 

 Digby, Sir Kenelm, on nitre, 12 

 Digestion, process of, 179, 191 

 Diminishing returns, law of, 283 

 Diseases, fungoid, 86, 174, 216 

 Dissolved bones, 109, 113, 155 

 Dissolved Peruvian guano, 235 

 Dominant fertilisers, 89, 280 

 Dormant plant food, 23, 282 

 Drainage, affected by farmyard man- 

 ure, 220 ; water, composition of, 

 61, 165 

 Dried blood, 239 



Dry and wet seasons, effect of farm- 

 yard manure in, 220 ; value of 

 potash salts in, 175 ; with nitro- 

 genous manures, 67 ; with phos- 

 phatic manures, 137 

 Dundonald, 103 

 Dung, cake-fed, 203 ; definition of, 



178 ; value for mangolds, 316 

 Dyer, 148, 165, 206 



Earth closet system, 244 

 Egypt, nitrate of soda deposits in, 47 

 Ellis, W., on manures, 12, 159, 241 

 Epichloe typhina, 87 

 Error of experiment, 359 

 Estremadura, phosphates in, 114, 



117, 123 

 Evelyn, J., on bones, 107 ; on 



manures, 11 ; on nitre, 12 

 Excreta, composition of, 181, 243 



