MAKING THE ROGK GARDEN 25 



towards the soil ; then all moisture that falls will trickle 

 to the roots of the plants instead of trickling away from 

 them, as it would do if the rocks leaned outwards. It 

 is wrong to place one rock so that its edge overhangs 

 the rock below ; it should be set slightly farther back, 

 otherwise plants beneath it would be liable to perish 

 from lack of moisture. 



