332 



Agricultural Chemistry. 



Oleic acid, 96. 



Olein, 96. 



Oleomargarine, 285. 



Omasum, 220. 



Organic acids in plants, 99. 



Oxidation, 16. 



slow, 96. 

 Oxen, ration for fattening, 258. 



ash stored up, 116. 



comparison with cow, 264. 

 Oxygen, in the air, 29. 



occurrence, 7. 

 Ozone, 31. 



Palmitin, 96. 

 Pancreatic juice, 223. 

 Pace, influence on food require- 

 ment, 256. 

 Pasteurizing, 279. 

 Paris green, 295. 

 Pears, 195. 

 Peas, 188. 

 Peat, 118. 

 Pectins, 94. 

 Pentosans, 94. 

 Pentoses, 94. 

 Pepsin, 222. 

 Peptones, 207. 

 Perspiration, 227. 

 Petroleum emulsion, 305. 

 Phosphates, loss by drainage, 66. 

 Phosphatic fertilizers, 153. 

 Phosphorus, function in plants, 

 107. 



occurrence, 12. 



in animals, 210. 



in foods, 218. 

 Phytin, 110. 

 Pigs, ration for fattening, 260. 



rations for growing, 248. 



manure of, 113. 



Plants, assimilation, 86. 



constituents, 88. 



respiration, 87. 

 Plums, 195. 

 Pop corn, 186. 

 Potash, loss in drainage, 66. 



fertilizers, 158. 

 Potassium, function in plants, 106 



occurrence, 13. 

 Potassium nitrate, 149. 

 Potatoes, 195. 

 Preservation of milk, 278. 

 "Process" butter, 284. 

 Proteins, classification, 100. 



kinds of, 101. 

 Ptyalin, 219. 

 Putrefaction, 17. 



Quartz, 36. 



Quick lime, 161. 



Raffinose, 91. 



Rain water, 69. 



Rape, 189. 



Rechnagel's phenomenon, 273. 



Reduction, 16. 



Reverted phosphates, 154. 



Rennin, 221. 



Rennet, 288. 



Renovated butter, 284. 



Resin soap, as insecticide, 306. 



Respiration, in animals, 226. 



in plants, 87. 

 Reticulum, 220. 

 Rice, 186. 

 Ripening, of cheese, 289. 



cream, 284. 

 River water, 69. 

 Rocks, classification of, 35. 

 Root, crops, 193. 



pressure, 83. 



