MOWING, ROLLING, AND WATERING 47 



Top dressings of good garden loam — rich 

 fertiliser is not indicated — and rolling again 

 and again will accomplish wonders. It is 

 hardly possible to make the surface of the 

 lawn too compact by this process. A roller 

 which will exert a pressure of a thousand or 

 even fifteen hundred pounds will not be too 

 heavy. Therefore use as heavy a piece of 

 machinery as you can comfortably handle. 

 What is known as the water ballast roller, 

 which consists of two hollow cylinders into 

 which water or sand can be poured to ballast 

 and attain the necessary weight, should find 

 a place in the equipment of every country 

 estate where a lawn of any large dimensions 

 is to be maintained in good condition. These 

 rollers are made on what is called the 

 sectional pattern, that is, they consist of two 

 or three distinct cylinders by means of which 

 the machine can be turned without tearing 

 the surface of the lawn; the two sections 

 operate in different directions. 



WHEN TO MOW 



Mowing is necessary inasmuch as it pre- 

 vents the plants from going to seed; and the 



