SCIENTIFIC AND PRACTICAL AGRICULTURE. 249 



have some thought? 314. Explain the formation of ammonia? 

 314. Of carbonate of ammonia? 314. 



How can the escape of ammonia be prevented ? 315. Will you 

 give the explanation in full? 315. 



What injury comes from the washing of manures? 316. From 

 excessive fermentation? 316. What example of burning ma- 

 nure? 317. 



What is said of pig-pen manure in 318 ? In 319? In 320? 

 In 321? In 322? In 323 ? In 324? 



What should be a rule for manures? 325. How can the wash- 

 ing of manures be prevented during heavy rains ? 320 and 325. 



In what two conditions will a pig-pen be very offensive ? 326. 

 What four bad consequences follow ? 326. What then is another 

 rule ? 327. How can all the bad consequences before spoken of 

 be prevented? 327. Why should the farmer be more careful 

 than others that no offensive odor arise from his premises l^fj^S. 

 What is a singular but well-known fact ? 328. 



What is said of the manure of the sheep-fold in section 329 ? 

 In 330? In 331? 



What portable and inoffensive fertilizer is sometimes prepared 

 from night-soil? 332. What advantage arises from this? 332. 

 On a farm, how may night-soil be managed advantageously ? 333, 

 334 and 335. 



How may the washings of the sink be best managed and ap- 

 plied ? 



What is said of composting in 337 ? In 338 ? In 339 ? In 340 ? 

 In ,341? In 342? 



Should there be in the vicinity of the house a place of recep- 

 tion for whatever may be of value for the land ? 343. Will you 

 describe how it may be managed ? 343. Describe further, as in 

 344? As in 345? 



What is said of woollen rags ? 346. Of old shoes and boots, 

 and of accumulations of leather parings ? 346, Of dead animals ? 

 347. Of bones? 348. What further of bones in 349? In 

 350? 



What would you say of burning bones and then applying the 

 ashes? 



What is said of foreign fertilizers ? 352. Of the men who un- 

 dertake to furnish them ? 353. 



How can the farmer best decide for himself when to go to the 

 expense of purchasing fertilizers from abroad ? 354. Till he thus 

 decides; on what must he depend ? 



What further is said of the importance of home manures in 

 356? In 357? 



Why has the chemistry of common ohjects been dwelt upon in 

 former portions of this work ? 358. Why the geological forma- 

 tion of soils ? 358. How have plants and animals been spoken 

 of? 358. How manures ? 358. 

 11^ 



