INDEX. 359 



Clays, their nature, 27. — Unproductive, whatever may be the 



cause, 28. 

 Clearing of lands, xxiii. 

 Composts, how formed, 64, 65. 

 Cream, its nature, preservation, uses, 208, 209. 

 Crises, manufacturing and commercial, less numerous in France than 



in England, 223. 

 Cropping, explained, 120, 121. — Principles which should guide the 



agriculturist, 121, 124. — Examples of cropping upon compact soils, 



130. — Upon light soils, ibid. — Upon siliceous soils, ibid. — Upon 



soils suitable for wheat, 131. 



D. 



Dews, more abundant in the south than in the north, 33. — Their ef- 

 fects, ibid. 



Distillation, 2.52. — Processes of the ancients, 252, 253. — Its prog- 

 ress, 254. — Different methods, ibid. — New processes, 259-262. — 

 Variety of apparatus for distilling, 263. 



Division of landed estates, xxx. — Division of the soil into small es- 

 tates, 226 et seq. 



Domains to be devoted to agricultural instruction, 233. — Various 

 qualities which the soil should possess, ibid. 



Drinks, for the use of common people ; means of rendering them 

 healthy, 271 et seq. — Fermented, 273. — Method of preparing them, 

 274. — Vinous, caWedpiquettes, 275, — Their utility, 276. — Obtained 

 from the sap of trees, 279. — Mode of making caZoM, at Cor omandel, 

 ibid. — Of making chica, in America, ibid. — Of making gttass, in 

 Russia, 280. 



DryaNo, employed as a means of preservation, 183. — Processes, 184 

 et seq. 



Dung, its properties, 64. — Salts which it contains, ibid. — Adaptation 

 of it to each variety of soil, ibid. — Fowls', 61. — Night-soil, ibid. — 

 Lands and plants to which it is suited, ibid. — Perfection of this 

 branch of business in Belgium, 62. 



Earths, their nature, action upon vegetation, 14. — Principles to which 

 they owe their fertility, 17, 18. — Formed by the waste of mountains, 

 19,20. — Origin of the earths which cover the table-lands of moun- 

 tains, 21. — Actual composition of arable soils,. 19. — Those earths 

 which can pass into plants, 26, 27. — Their properties, 30. — Those 

 best suited to absorb moisture, 35. — Analysis of them, 44. — Their 

 desiccation by fire, 45, — Dissolved by acids, 46. — Of earths, salts, 



