ON THE CONSTRUCTION OF ROCK GARDENS 29 
sandstone, red, grey, or yellow, are excellent, but flint, 
granite, or marble, being of a non-porous nature, are quite 
unsuitable. In the matter of arrangement of stones, one 
or two points should always be borne in mind. The first 
is, that to stick long, narrow pieces of stone to stand 

ROCK-BUILDING. 
The lower drawing (B) shows the wrong way to build. A gives an idea of the proper placement 
of stones. The top drawing indicates a rock garden during the first season’s growth. 
perpendicularly on end, is ugly and quite useless. Stones 
serve useful purpose when they keep the soil of a sloping 
bank from washing down during heavy rainstorms; also, 
when they protect the underlying soil from the scorching 
heat of midsummer sun, and from severe frosts during 
winter. It will therefore be apparent, that for both these 
