48 THE GRASSES 



amount of barn-yard manure, in a well rotted state, every 

 four or five years, and a small quantity of commercial ma- 

 nure every year, say in January or February. Under the 

 most favorable circumstances, however, and with the best of 

 treatment, the establishment of a really good turf is the 

 work of years. But when once established it is a thorough- 

 ly safe and exceedingly profitable investment. 



