Walls 39 



shape, size or spacing of these features for 

 they depend entirely upon the use of the 

 wall, its position, height, etc. The general 

 principles of proportion apply as in all 

 other matters of design. 



The height of formality in a stone wall 

 is where the stone is cut and laid exactly 

 as for the walls of a building. That is 

 to say, they may be dressed with any of 

 the surfaces familiar to the stone mason; 

 the joints may be narrow or rusticated; 

 architectural forms may be used and the 

 specifications for such walls would read 

 the same as for the walls of any stone 

 building. 



WALL GARDENS 



An unusual variety of wall is one where 

 planting is done directly upon the wall 

 itself. This is called a Wall Garden. 



The wall in this case is more or less 

 informal and is laid up dry and the crevices 

 are packed with soil for the nourishment 

 of the plants. The stones in the wall are 

 so set that they will drain off all super- 

 fluous water. The best wall for this pur- 

 pose is a retaining wall, not over five feet 



