ON GROUSE-DRIVING 183 



butt is dug out to a depth of slightly over 

 two feet, and the parapet built up to the 

 same height above ground -level, giving 



eetion 

 hewing Slopes 



the occupant a shelter of above 4j feet, 

 which is the most convenient height to 

 shoot over. The interior slopes should 



•d rai n 



drain 



be made as steep as possible, and should 

 be lined with sods of growing heather. 

 The drain should be made deep enough 

 to carry away any water that collects 

 inside the butt. 



The second diagram shows the built-up 

 butt, which has to be made use of when, 



