TERRA-COTTA ROOFING-TILES. 



35 



roofing-tiles were found. These were made after the flat 

 Roman pattern, but were remarkable not only for their 

 massive size, but for certain structural 

 peculiarities, not seen in the typical 

 Roman form. The tegula measured 

 1.07 metres in length by .80 centi- 

 metres in width (fig. 46 A). In some 

 examples the upper inferior margin 

 was turned at right angles, and this 

 was strengthened by a thin brace as 

 shown in the fragment (fig. 46D). 

 On the superior surface of the tegula 

 a rounded knob was present (fig. 

 46E). This was perforated for the 

 admission of a bronze nail 

 thin concavo-convex head (fig. 46F), 



having a 



FIG.T5. 



which conformed to the shallow and lenticular knob on the 



A 



FIG. 46. 



tile ; by this device the rain was more thoroughly excluded. 

 The imbrices varied in length, the longest being .82 centi- 

 meters in length, with a width of .28 centimeters and a 



