586 



INDEX. 



Payen and Boussingault on composi- 

 tion of dried flesh, 425. 



Peas, mamirial constituents in, 282 ; 

 manuring of, 527 ; phosphorus in, 

 205 ; source of nitrogen, 153. 



Peat, absorbing properties of, 239 ; 

 adulterant of guano, 317 ; analysis 

 of stable-manure from, 281 ; litter, 

 239 ; nitrogen in, 240 ; retaining 

 properties of, 240 ; soils, 123. 



Pelicans, guano from, 297. 



Penguin Island guano, 330 ; nitrogen 

 in, 330 ; phosphoric acid in, 330. 



Penguins, guano from, 297. 



Percival on carbonic acid in plants, 

 12. 



Peru, guano deposits in, 327 ; guano 

 first used in, 297 ; nitrate of soda 

 from, 161, 162. 



Peruvian guano, 300-306 ; appearance 

 of, 303 ; composition of, 304-306 ; 

 deposits of, 301 ; imports of, 151, 

 297 ; source of nitrogen, 151. 



Peters and Eichhorn on solvent power 

 of salt, 471. 



Petzholdt on sources of plant's nitro- 

 gen, 42. 



Pfeffer on action of light on plant - 

 growth, 38. 



Phoenix Island guano, 309. 



Phosphate of iron in Chincha guano, 



Phosphate of lime, in Algerian phos- 

 phate, 379 ; in apatite, 374 : in 

 Belgian phosphate, 377 ; in bones, 

 364 ; in Cambridge coprolites, 374 ; 

 in Carolina phosphates, 376 ; in 

 crust guanos, 379 ; in Estremadura 

 phosphate, 375 ; in Florida phos- 

 phate, 378 ; hi French phosphates, 

 379 ; in Lahn phosphates, 379 ; in 

 Somme phosphate, 378 ; reverted in 

 mixing manures, 537. 



Phosphates of lime, 385-388, 398 ; im- 

 portance of mechanical condition 

 of, 542. 



Phosphates, mineral, 373-381 ; imports 

 of, 381 ; value as a manure, 380. 



Phosphatic guano, 308, 330. 



Phosphatic manures, application of, 

 480. 



Phosphoretted hydrogen in farmyard 

 manure, 258. 



Phosphoric acid, 199-211 ; in ash of 



plants, 54 ; in basic slag, 404 ; in 

 bat guano, 325 ; in bones, 363 ; 

 condition of, in soil, 203 ; in cow- 

 dung, 226-228; in cow excre- 

 ments, 280 ; in cow-urine, 230 ; in 

 farmyard manure, 260 ; in fish- 

 guano, 321 ; fixed by soils, 58 ; gain 

 of, 208 ; in guano, percentage of, 

 329, 330 ; guano a source of, 202 ; 

 in hoofs and horns, 426 ; in horse- 

 dung, 226-228; in horse - nrine, 

 230; importance of, 88; loss of, 

 artificial sources of, 206 by drain- 

 age, 206 in farmyard manure, 208 

 in milk, 207 in sewage, 208 

 sources of, in agriculture, 205 ; in 

 meat-guano, 324 ; mineral sources 

 of, 200; necessary for plant-growth, 

 55 ; occurrence of, in animals, 205 

 in nature, 199 in plants, 204 in 

 soil, 203 ; in oxen excrements, 280 ; 

 in pig-dung, 226, 227 ; in pig excre- 

 ments, 281; in pig-urine, 230; po- 

 sition of, in agriculture, 199-211 ; 

 relative trade values of, in manures, 

 400 ; in rocks, 202, 211 ; in sewage- 

 sludge, 441; in sheep-dung, 226 

 228 ; in sheep excrements, 280 ; 

 in sheep-urine, 230; statement of, 

 in analyses of manures, 541. 



Phosphorite, 201, 374. 



Phosphorus, in albuminoids, 205; in 

 animals, 205; in beans, 205; in 

 peas, 205; in plants, 204; in pig- 

 iron, 401. 



Physical properties of soils, 66-87. 



Pichard on action of gypsum on ni- 

 trification, 173. 



Pig-dung, composition of, 226 ; in dry 

 state, 227. 



Pig excrements, 281 ; composition of, 



Pig-manure, 250; amount produced 

 per day, 251 ; mineral matter in, 

 251 ; nitrogen in, 251 ; poor in 

 nitrogen, 251. 



Pig-urine, composition of, 230 in dry 

 state, 231. 



Pigeon-dung, 320, 325; analysis of, 

 331. 



Pigs, excrements of, 281; food con- 

 sumed by, 281. 



Pisagua, nitrate-fields at, 340. 



Plant, action of light on, 38 ; amount 



