220 THE SOILS AND CROPS OF THE FARM. 



snow often gives good results. The seeds sink into 

 the liquid mud produced by the melting snow. 



The quantity of seed varies largely with the local- 

 ity. Ten pounds per acre, or about 85 seeds per 

 square foot, may be given as about the average when 

 sown alone. Twice the quantity is said to be sown 

 in some localities. When sown with timothy or other 

 grass seed six pounds will usually suffice. 



Mammoth Clover has generally been consid- 

 ered a distinct species under the Latin name Trifo- 

 lium medium. Sutton denies that TrifoUum medium 

 or zig-zag clover has ever been known in commerce 

 and states that the cow grass of England is but a 

 perennial variety of medium red clover. 



It is distinguished from red clover by its larger and 

 coarser growth and by its ripening three to five weeks 

 later. Typical specimens have less hairy stems, 

 narrower and more pointed leaves, and more conical 

 and darker colored heads, which may be raised on 

 short stalks. These distinctions are not well main- 

 tained. 



Mammoth clover ripens about the time of timothy, 

 and is, therefore, in this respect more suitable for 

 sowing with timothy than is medium red clover. 

 When medium red clover is sown with timothy the 

 crop can not be harvested when they are both in the 

 best condition. The danger is that the crop will be 

 harvested when the clover is too mature and before 

 the timothy has reached its proper growth. With 

 mammoth clover the best condition of each can be 

 obtained. Clover can generally be more readily 

 cured in July than in June, both on account of the 

 greater heat and drier atmosphere. 



