lo Weeds. 



wild mustard, the Russian thistle, the 

 prickly lettuce, the corn cockle and indeed 

 nearly all tlie various forms of weed life 

 that are greatly troublesome to us, come 

 from a foreign source. Foreign weeds in 

 this country are even more numerous and 

 characteristic than the people who brought' 

 them hither, and so they are likely to 

 remain, for weeds, unlike nationalities, do 

 not fuse and blend so as to lose their sev- 

 eral individualities. For some of them, as 

 the Canada thistle, the new conditions have 

 been found so favorable that they flourish 

 to a greater extent than even in the lands 

 whence they came. 



Although the presence of weed life in any 

 form is not desirable, some varieties, as for 

 instance the dandelion, are not greatly 

 harm;ful, while others, as the sow thistle, 

 quack grass and the Canada thistle, if given 

 a chance, will soon render the growing of 

 certain crops quite unprofitable. A large 

 majority of the weeds found in this country 

 may be kept in check by what may be 

 termed good cultivation, that is to say, by 

 such cultivation as is necessary to grow 

 good crops ; but other varieties require spe- 

 cific modes of treatment if, when the 



