CnEAP GLASS STRUCTURES. 



ELEVATION 



Explanation of the Firj^ires. — The frame shown in the drawing, was placed 

 against a wall of a new construction, and which has existed for more than twenty- 

 five years. The wall is formed of a framework of oak, forming squares, in which 

 et on edge two courses thick of blue paving tiles, nine inches square, 



