PEE FACE. 



THIS little work on ' Farmyard Manure ' is in 

 substance a chapter from a larger work on 

 ' Soils and Manures ' on which the author is at 

 present engaged, and which he trusts to have 

 ready for publication ere long. The subject is 

 one of universal interest to the farmer, and no 

 excuse is needed for offering to the agricultural 

 public the following short treatise on the nature 

 and composition of what is still the most im- 

 portant of all manures. In order to render the 

 treatment of the subject as simple as possible, 

 technical statements and tables embodying the 

 results of experiments have been relegated to 

 the Appendix. While the sources of much of 

 the information contained in the following 



