CHAPTER YI. 

 PRACTICAL AGRICULTURE 



RECAPmrLATION. 



358. In former portions of this work, I have dwelt 

 somewhat upon the chemistry of common objects^ hoping 

 that such knowledge as I have endeavored to impart 

 may be of some use to such as have not time to pur- 

 sue the subject further. I have spoken briefly of the 

 geological formation of soils, believing that the farmer, 

 as he ploughs his fields, drains his lowlands, or looks 

 after his herds over hill and dell, and along babbling 

 streams, may pursue these thoughts with pleasure and 

 profit. I have also spoken of plants and animals, of 

 their relations to each other ; of the latter as the con- 

 sumers of the former's produce, paymasters for what- 

 ever crops he produces. Of manures, as one of the 

 returns which animals make for their food and care, I 

 have spoken at length, as I supposed the importance 

 of the subject required. It remains to apply what- 

 ever of science may have been brought into notice to 

 practical agriculture. 



