EST YOUR RAW MATERIALS 



Chemical analysis will disclose 

 delects or deviations from standard 

 RED'K d MaYWALD, F. C. S., 

 CONSULTING CHEMIST, 

 Pino St. 'Phone, 823 John. New York 



LAMPBLACKS ESPECIALLY FOR RUBBER MANUFACTURE 



SAMUEL CABOT, BOSTON, MASS. 



