PRO 



427 



SAT 



Plants,, of a former world, 76. 



Formation of their components, 

 83. 



Functions of, 44. 



Improve thie air, 47. 



Influence of gases on, 50. 



of shade, 50. 



Inorganic constituents of, 105. 



Life of, connected with that of 

 animals, 22. 



Milky-juiced, in barren soils, 78. 



Nutritive qualities of, depend- 

 ence on nitrogen, 265. 



Organic acids in, 26, 106. 



salts in, 108. 



Perennial, nourished, 135. 



Products of, vary, 139. 



Size of, proportioned to organs 

 of nourishment, 66. 



Sources of their nourishment, 

 27. 



Succession of, its advantage, 162. 



Vital processes of, 84. 



Wild, obtain nitrogen from the 

 air, 99. 



Yield oxygen, 48. 

 Platinum does not decompose nitric 



acid, 292. 

 Ploughing, its use, 130. 



Recommended by Cato, 270. 

 Poisons generated by disease, 374. 



Inorganic, 374-379. 



Peculiar class of, 384. 



Rendered inert by heat, 389. 

 Poisoning, superficial, 379. 



By sausages, 387. 

 Pompeii, air from, 41. 



Bones from, 158. 

 Potash, action of, upon mould, 364. 



In limestones, 153. 



In grapes, 112. 



•Ley of, its effects on excre- 

 ments, 99. 



Presence of, in plants, accounted 

 for, 148. 



Replaced by soda, 113. 



Required by plants, 62. 



Quantity in soils, 148. 



Silicate of, in soils, 62. 



Sources of, 148. 

 Potatoes, oil of, 341. 



Effect of, as food, 139. 



Analysis of, 114. 



Germination of, 133. 



Produce of, increased, 134. 

 Poudrette, 199. 

 Products of transformations, 69. 



Prince, J. jD., first to apply phos- 

 phate of soda, &c., 286. 

 Purgative effect of salts explained, 



377. 

 Pus, globules in, 397. 

 Pv^ey, Mr., on nitrate of soda, 206. 

 Putrefaction, 63, 299, 300. 

 Of animals, 174. 

 Causes of, 292. 

 Communicated, 389. 

 Source of ammonia, 104. 



carbonic acid, 99. 



Putrefying sausages, death from, 



387; their mode of action, 388. 



Substances, their effect on 



wounds, 389 

 alkaline, 397. 



- acid, 397. 



Radical, what, 69. 



Rain-water, alkali extracted by, 150. 

 Reduction of oxides, 294. 

 Reeds and canes require silica, 155. 

 Removal of branches, effects of, 132. 

 Reservoirs of dung, 191. 

 Respiration, oxygen consumed by, 



41. 

 Rhine, soils in its vicinity, 168. 



Wines, 342. 

 Rice, analysis of, 98. 

 Ripening of fruit, 132. 

 Root secretions, 163; 256 

 Roots absorb, 107. 



Emit excrementitious matter, 

 163. 



Their ofldce, 125. 



Secretions of, 256. 

 Rotation of crops, 161, 174. 



Sal ammoniac, as manure, 282. 



Saliculite of potash , 326. 



Saline plants, 121. 



Salsola kali, 113. 



Salt, volatilization of, 123. 



Salts, absorption of, 116. 



Effect of, on the organism, 375. 



on flesh, 377. 



on the stomach, 377. 



Organic, in plants, 27. 



in the blood, 376. 



Passage of through the lungs, 

 376. 

 Salt-works, loss in, 124. 

 SaltiDort, 122. 

 Sand, plants in, 78. 

 Sandy soil, decay of wood in, 361. 

 Saturation, capacity of, 106. 



