Witt: Paving-bp.ick Mailrials.] 



[Phil. Journ. Sci., XI, A, No. 5. 



Fig. 1. Kiln at San Pedro IVIaoati bricic factory. 



Fig. 2. IVlolding and drying roonn at San Pedro IVIaoati brick factory. 

 PLATE I. 



