ROOMS. 65 
It consists of a main portion anda wing each two stories 
in height. The main portion is a square of say fifty feet. 
The walls are solid, there being no windows in the sides. 
0OOR 
CLOSET 
LECTURE ROOM. 
Fic. 21. 
The second floor consists of merely a gallery and thus the 
whole of the main building is a single room, and lighted by 
a lantern window in the roof. The walls are Occupied on 
5 
