Rock Gardens. 



^S5 



it is not necessary to have the concrete foundation shown in Fig. 385, although 

 the latter is the best form for the small moraine, affording the most complete control 

 over the water supply. In wet weather the inlet pipe is shut and the outlet opened ; 

 in dry weather the converse. Where a slope is available, Fig. 386 shows a 

 simple but efficient type of moraine. A half-inch pipe perforated at every six inches 

 is led along the top six inches below the surface. Flat rocks are useful, as in the bog 

 garden, for access to the plants. Fig. 387 shows the construction of a moraine 

 which has been found to work well in practice. 



rpEEFOKATED PIPE 



FIAT ROCKS 



SMALL CBANITE 

 CHIPS § SPRINKUMG 

 OF LEAF MOULD 

 A LITTLE OLD 

 MORTAR BUBBIE. 

 '§ A SMALL QUAN- 

 TITY OF SAND, . 

 THE WHOLE LAVER 

 9 INCHES TO 

 ONI. rooTTXICK 



POUqH STONES SUCH 

 SECTIONAL AS PEBBLES OR. qRANfTE 



VIEW. 



FIG. 386.— CONSTRUCTION OF MORAINE ON SLOPE. 



PERFORATED 

 PIPE 



QRANITE CHIPS ETC 

 AS IN Fig. 386. 



WV" .-^ ^.o^c-TONEScSes oCn.\ - 





PI(j_ 387.— CONSTRUCTION OF MORAINE ON LEVEL GROUND. 



