i6 ROCK GARDENING FOR AMATEURS 



is probably more natural than that of any other. The 

 rocks are marked with cracks and crevices and fissures, 

 telling of ages of exposure to the elements, and they 



form admirable 

 roothold for 

 many alpine 

 plants. 



Weathered 

 sandstone, too, 

 is excellent, 

 and, moreover, 

 cheaper than 

 limestone. 1 1 

 is very porous, 

 absorbing much 

 moisture, and 

 plants cling to 

 it very readily. 

 Millstone grit is 

 a form of sand- 

 stone, excel- 

 lently suited 

 also to rock-gar- 

 den building, 

 and much liked 

 by the plants. Thisjs of greatly varying shape ; the rocks 

 are generally bold and rugged in appearance, and even 

 in the hands of a beginner are likely to give pleasing and 

 natural results. There are many other different kinds 



How not to build a Rockery. 



