INDEX 



393 



Pectin substances, 184, 194. 

 Pentosan, composition of a, 191. 

 Pentosans in fodder, 263. 

 Pentoses, 180, 184. 



methyl, 185. 

 Pepsin, 274. 

 Peptones, 208. 



Perchlorates, effect of, on seeds, 134. 



estimation of, 174. 

 Perseitol, 184, 192. 

 Petroleum as insecticide, 371. 

 Phaseolunatin, 215, 282. 

 Phellandrene, 202. 

 Phenol, 276. 



as disinfectant, 368. 

 Phenols, 203. 

 Phenyl-alanine, 208. 



sulphuric acid, 95, 280. 

 Phloridzin, 195. 



Phosphates, mineral, production of, 144. 



insoluble, in manures, 168. 



soluble, in manures, 167. 

 Phosphatic manures, 142. 



valuable ingredients of, 172. 



nitrogenous manures, 172. 

 Phospho-proteins, 208. 

 Phosphorcarnic acid, 318. 

 Phosphoric acid, available, in basic slag. 



150. 



in soils, 92. 



citrate-solubility of, 91. 



estimation of, in manures, 174. 

 in soils, 90. 



form of, in manures, 142. 



in drainage water, 75. 



in guano, 120. 



limit of, in soils, 92. 



manurial value of, 177. 



proportion of, in food, retained by 



animals, 309. 



retention of, by soils, 54 



Phosphorites, 9, 143. 

 Phosphorus, 9. 



function of, in plants, 206. 

 Phytochlorin, 217. 

 Phytorhodin, 217. 

 Phytosterol, 199. 



Phytyl chlorophyllide, 217. 

 Pialyn v. Steapsin. 

 Picoline carboxylic acid, 49. 

 Pig, excrement of, 108. 

 amount of, 113. 



standard rations for, 302. 

 Pigeon dung, 121. 

 Pinene, 201. 



Pixine, 316. 

 Plant, 219. 



food, availability of, 91. 



improvement of, in soil, 103. 



removed by average crops, 260. 



poisons, 374. 



Plants, action of light on, 227. 



constituents of, 179. 



diminished growth of, in towns, 29. 



Plants, flowers and seeds of, 233. 



formation of formaldehyde in, 231. 



leaves of, 227. 



leguminous, nodular swellings of, 68. 



main parts of, 222. 



position of oil in, 200. 



roots of, 222. 



stems of, 227. 



turgescence of cells of, 225. 

 Plasmolysis, 226. 



by spraying, 363 

 Plumule, 221. 

 Poisons, contact, 371. 



food, 370. 



plant, 374. 



Polycarpcea spirostylis, 362. 

 Polyhalite, 154. 

 Polypeptides, 208. 

 Polysaccharoses, 183, 188. 



hydrolysis of, 186. 

 Pop corn, 238. 



Potash, amount of, in drainage waters, 

 75. 



compounds, retention of, by soils, 



10, 75, 169. 



determination of, in soils, 89. 



felspar, 9, 35. 



limit of, in soils, 92. 



loss of, through skin, 109. 



manures, 153. 

 production of, 154. 



valuable ingredients of, 173. 



manurial value of, 177. 



muriate of, 156. 



| permanganate of, 367. 



proportion of, in food retained by 



animals, 309. 



sulphate of, 156. 

 Potassium, 9. 



chloride, 156. 



estimation of, in manures, 175. 



function of, in plants, 206. 



nitrate, 141. 



oxalates, 199. 



sulphide as fungicide, 370. 

 Potato, sweet, 216, 250. 

 Potatoes, 248. 

 Preservation of milk, 344. 

 Producer gas, 136. 



Products, miscellaneous, used in agri- 

 culture, 359. 

 Proline, 209. 



oxy-, 209 

 Protamines, 207, 210. 

 Proteids, 207. 



classification of, 207. 



estimation of, 211, 352. 



formation of, in plants. 232. 



tests for, 210. 

 Proteoses, 208. 

 Protozoa and amoebae, 61. 

 Prunase, 215. 

 Prunasin, 215. 



Prussic acid, 6, 214, 240, 282. 



