318 



Mr. PETRIE'S Inquiry into the Origin and 



and is lighted at its east end by a small, unadorned, semicircular-headed window, 

 splaying considerably on the inside; and its doorway, which is also semicircular- 

 headed, is placed in the west wall In both instances, however, the arch is formed 

 in a single stone. The walls, which are constructed wholly of gneiss, or strati- 

 fied granite, are two feet seven inches in thickness ; and the massive masonry, 

 which is polygonal, is of the oldest character, the stones being unchiselled, 



except in the window and doorway, which constitute the chief features of the 

 building. This doorway measures, at present, but four feet ten inches in 

 height, two feet in width at the spring of the arch, and two feet four inches at 

 the base ; and the lintel, or arch-stone, is ornamented on each face with a rude 

 architrave in low relief, now greatly time-worn. The stones immediately be- 

 neath these extend the entire thickness of the wall, and on one of them we 



