INDEX 



A. 



Acid, carbonic, (oas,) one of the fluids contained in the atmosphere , 

 its proportion to azote and oxygen,!. — Its absorption by the leaves 

 of plants, 2, 5. — Its combination with lime, 5, 32. — Its solution in 

 liquids, 5. — Produced by germination, 77,78. — Its influence upon 

 the nutrition of vegetables, 80. — Its decomposition, 81. — Furnished 

 by ripe fruits, 87, 88. — By leaves, fruits, and roots, 132. 



Acids, vegetable, their differences at different periods of vegetation ; 

 those most abundant, 159. — Processes for extracting them, 162 et 

 seq. — Their uses and properties, ibid. 



Affinities, laws which affect bodies, 3 et seq. 



Agriculture, its importance, xi. — Its progress, xii. — Its wants, xiii. 

 — Conditions necessary to hasten its progress, xxi. — Interests and 

 duties of government, ibid. — Foreign products which it may yet ap- 

 propriate ; table of the products of French agriculture, 131. 



Air, its action upon vegetation, upon different soils ; what it supplies 

 to the plant; its action upon dead vegetables, upon fruits, 21-41. 



Albumen, its existence in many vegetables, 154. — Its uses, its analy- 

 sis, 154, 155. 



Alcohol, a means of preserving animal substances from putrefaction, 

 202, 270. — Of hydrometers, 2G9. — Alcohol from cider, 270. — From 

 wild cherries, ibid. — From molasses, ibid. 



Alkalies, fixed, 1G8. 



Alumina, enters into the composition of arable soils, 18. — Is abundant 

 in clays, 27. — Process for obtaining it pure, 31. — Its specific gravi- 

 ty, ibid. — Its properties and composition, ibid. — Its action upon 

 water, 35. — It combines with oils, 39. 



Ammonia, C2. 



Animals, number of animals employed in French agriculture, 132. 



Ashes, of mould, 17. — Action of the ashes of turf and pit coal as ma- 

 nures, 76. — Effects of the ashes from our domestic fires, 76, 77. — 

 The ashes obtained from different vegetables, table of experiments 

 made, 170. 



