TERRA-COTTA ROOFING-TILES. 



67 



board. 1 The iron frame was then removed, and the board 

 with its unbaked tile was placed in the sun to dry. The 

 workman informed me that he could make a thousand tiles 

 a day. Fig. 82 shows the iron frame resting on the 

 flannel in position to be filled with clay. The board upon 

 which the unbaked tile is to be transferred is to be seen 

 to the left. Fig. 83 is reproduced from a hasty sketch 

 of a Wurtzburg tiler at work. 



Large dome-shaped brick ovens were used in baking 



FIG. 83. 



the tiles. The structure was flat above, and leading down 

 to the ovens below were small holes two or three feet 

 apart. The fire, having been started, was afterwards fed 

 by pushing into these holes at short intervals small quan- 

 tities of fine coal or coal-dust. The utilization of coal- 

 dust in this way struck me as an economical method of 

 using this waste product. I was informed that ordinary 

 bricks were baked in the same way. 



>Many old Korean and Japanese roofing-tiles show on their lower side a cloth, 

 mark impression, and doubtless similar methods were resorted to in their manu- 

 facture. 





