Possibility of Destroying Weeds. ^^ 



would probably grow from seeds brought 

 by some one or other of the various agen- 

 cies concerned in weed distribution. When, 

 therefore, a farm is spoken of as clean in 

 this work, it is meant ( i ) that it is so free 

 from noxious weeds that they do practi- 

 cally no injury to the crops that may be 

 grown upon it; and (2) that such -weeds as 

 are found upon it are so few in number 

 . that one can remove by hand or with the 

 spud, in one day of ten working hours, all 

 of them found growing in any ten acres of 

 the farm. Such a definition may seem arbi- 

 trary, but since absolute freedom from nox- 

 ious weeds is not, at any rate for the pres- 

 ent, to be looked for, some definition seemed 

 necessary to prevent misconception. A def- 

 inition was chosen, therefore, within rea- 

 sonable reach of attainment, and such as 

 would serve all practical purposes. The 

 mode of securing and maintaining the 

 above-defined degree of cleanliness will be 

 described in subsequent chapters. 



To show that the work of maintaining 

 cleanliness is not necessarily expensive, it 

 will be sufiicient to quote again from the 

 Report of the Ontario Agricultural College 



