3^ INDEX. 



32. — Absorbs water, ibid. — What limestone loses by calcination, 68;. 

 69. — Air-slacked; its uses in agriculture, 69. — Danger of using quick- 

 lime,ibid. — Its combination with vegetable and animal substances,69, 

 70. — Its action upfon lands, 71. — Mode of employing and preparing 

 it, ibid. — Presence and effects of magnesia in calcareous roeks, 72. 

 — Use of lime for the purification of sheep-folds, 86, 87, 



LiQ,uoRS, alcoholic, method of making them, 201, 202. 



Litharge, 145. • 



M. 



Magnesia, sometimes enters into the composition of arable soils, 18, 

 Manures, xxx, 49. — Their nature and action, 49, 50, 66. — Difference 



between nutritive and stimulating manures, 75, 76. 

 Manuring, the process, 106. — Its effects, 107. — Varied according to 



the nature of the soil, 109. 

 Marl, its composition, 28. — Its properties, qualities, mixtures with 



other substances, 29. 

 Milk, 207. — Principles which it contains, and modes of separating 



them, 211. — Goats' milk, ibid. — Woman's milk, ibid. — Asses' milk, 



212. — Mares' milk, ibid, et seq. 

 Mixture of earths, 26, 27. — Their properties, 38. — Of chalk, silex, 



alumina, 38, 39. 

 Mould, its formation, 15. — Principles which it contains, ibid. — Product 



of its distillation in a retort, 16. — Its decomposition, 17. — Its ef- 

 fects upon vegetation, 36, 81. 

 Mountains, their decomposition causes the formation of arable lands, 



19-23. 



N. 



Nations, agricultural and manufacturing; difference between them,221. 

 Nutrition of Plants, its operation, 80 et seq. — Summary of the 

 phenomena attending it, 99 et seq. 



Oils, their character ; fixed and volatile, 142, 143. — Mode of extracting 

 them, 143, 144. — Processes for purifying them, ibid. — Fixed oils 

 combined with metallic oxides, 144, 145. — Their uses, 145. — Vola- 

 tile oils, 146. — Plants which furnish them, 146, 147. —Their uses, 

 ibid. 



Oxygen (gas), forms one fifth part of the atmosphere, 2 et seq. — One 

 of the elements of vegetable productions ; principal agent of germina- 



