60 YAED AND GAEDEN 



able and the grass starts into growing, the en- 

 tire surface of the lawn should be rolled to 

 overcome the effects of the alternate freezing 

 and thawing during the winter months, which 

 has a tendency to loosen the surface soil. It 

 will be readily observed that the heavier the 

 soil and the more moist it is the more necessity 

 there is for rolling. In using the roller it is 

 best to roll in two directions at least, as was 

 suggested for broadcasting the seed — that is, 

 from north to south and from east to west. In 

 selecting the roller obtain one that will repre- 

 sent a weight of a thousand pounds at least. 

 Very frequently it will be found that old lawns 

 which appear to be beyond tlie power of cul- 

 tivation to bring back into condition, require 

 nothing more than repeated applications of the 

 roller, and in the case of new lawns very poor 

 and disappointing results will follow the fail- 

 ure of the plante'r to make use of this essential 

 lawn device. 



MOWING 



No lawn can be kept in good condition un- 

 less it is frequently mowed. The best method 

 to follow in cutting the grass is to mow it once 

 a week with the knives of the machine set high. 



