Account and Description of a Hollow Wall. 245 



hollow space through the wall. The annexed elevation and 

 plans of the wall will make this description more intelligi- 

 ble, and as it may be desirable, in many situations, to vary 

 the piers, I have given two ground plans, one with the 

 whole, projection at the back, and the other back and front. 

 The wall in Lord Arran's garden is of the first description, 

 and is so represented in the elevation figured. 



From experience in my own garden, and from that of 

 others, for whom I have built walls in this method, I have 

 no hesitation in pronouncing it to be sufficiently strong for 

 all garden purposes, the saving of expense in its construc- 

 tion is full one-third, and it has the advantage of becoming 

 dry after the soaking of long rains, much more rapidly than 

 a solid wall of the same or any other thickness. 



I remain, 

 Sir, 



your very obedient Servant, 



Henry Silverlock. 



Chichester, 



