Wrst and Cox: Philippine Cement.] 



[Phil. Journ. Sci., Vol. IX, A, No. 1. 



Fig. 1. Vertical and rotary cement l<ilns and air compressor manufactured in ttie Bureau of 



Science. 



1 # 



Fig. 2. Perfectly sintered Portland cement 

 clinker made from available Philippine raw 

 materials and burned in our experimental 

 kiln. 



PLATE I. 



Fig. 3. Perfectly sound Portland cement 

 made from available Philippine vol- 

 canic tuff. 



