Stepping-stones to Success 



41 



well-supplied larder from which the plants may draw 

 sustenance at their own sweet will (Figs. 19 and 20). 



i.^trai-^ 



9miM)XeArvl/ 



Fig, 20. — Section showing the principle of arranging 

 Stones in Dry Walls. 



Note how the stones slope back from the vertical. 



When and How to Plant. — Planting may be done as 

 the work of building proceeds, or when it has been 

 completed. For the freer growing subjects it may be 



