162 THE WHEAT CULTURIST. 



may in a great measure account for the varied success 

 which always attends subsoil ploughing, and a more 

 careful attention to the difference may be the means of 

 preventing much disappointment." *. 



FIG. 32.- Gilbert's Subsoil Plough. 



The accompanying illustration represents an improve- 

 ment in ploughs, which is employed, with satisfactory 

 results, in preparing the land for wheat, where the soil 

 is of such a character as to require the subsoil to be 

 kept beneath the thin layer of fertile mould on the sur- 

 face of the ground. This plough has been introduced 

 by the inventor," P. M. Gilbert, Kewanee, Illinois, in 

 some of the wheat-growing sections of the United States ; 

 and farmers on our lake slopes, when the surface soil is 

 thin, will find that it will be greatly to their advan- 

 tage to use such a plough, rather than to turn all their 

 mould below the subsoil. 



It will be perceived that this plough has a subsoil 

 attachment, which can be adjusted to run any desired 

 depth in the bottom of the furrow made by the main 

 plough. 



In my second volume of the Young Farmer's Man- 



