TERRA-COTTA ROOFING-TILES. 



71 



Asia, it was unnecessary to represent that region of the 

 world. 



Sources of information. The preceding notes have been derived from 

 personal observation in most of the countries mentioned, except in 

 India and Persia and those countries immediately bordering on the 

 Mediterranean. For these countries, particularly Italy and Greece, I 

 have depended upon photographs. Many of these examined were of 

 large size, and presented the most reliable details; even when of small 



size, the type of tile could be easily made out with the aid of a lens. 

 Reproductions from sketches illustrating architectural tours, etc., 

 could not be depended upon, as the roofs in these drawings were 

 usually represented by rough, shaded surfaces or formal lines. The 

 art-galleries in Berlin, Dresden, London and other places were good 

 hunting-grounds to fix the date of the use and distribution of the roof- 

 ing tiles (as, for example, a picture by Botticelli in the Dresden Gal- 

 lery, of the thirteenth century, showing the flat, normal tile of Rome; 



