32 



ON THE OLDER FORMS OF 



section somewhat angular. In Verona, the tiles appear 

 quite long. Photographs of Parma, Milan, Pavia, Bologna 

 and other cities reveal minor peculiarities in the manner 

 of tiling. In some cases courses of imbrices are close to- 

 gether, and the tiles are often crowded in the courses from 

 eaves to ridge. There is no alignment of the tiles, as in 

 Chinese, Korean and Japanese tiling, and the work always 

 seems slovenly done. 



In Verona, fragments of tiles are inserted in the in- 



ter-spaces between the 

 ridge-tiles and their 

 junction with the roof- 

 tiles, as shown in fig. 41 . 

 At Certosa and Milan 

 rows of imbrices with 

 their concave faces up- 



permost are placed between the rows of imbrices in their 

 normal position. In other words, after the roof is tiled 

 in the ordinary way, an additional layer is put on in an 

 inverted position between the rows of imbrices. The roofs 

 are low pitched and this extra layer probably offers an 

 additional security. 



Beside the normal tile there is often seen a broad flat 

 tile, with lateral 



edges turned up ac- 



companied by a 



semi-cylindrical im- 



brex. This tile is 



used in Rome, Flor- 



ence, Sienna, Pisa, 



Ravenna and doubt- 



less in other cities of Italy. 



series of photographs shows it to be more common in 



central Italy. On the roof slopes .the broad tegula may 



be seen in certain courses used as an imbrex (fig. 42). 



FIG. 42. 

 An examination of a large 



