our products not as good as 

 ght to be? Probably I can 

 >u how to make them right. 

 I anyway. 



BICK J. MAYWALD, F.C.S. 



CONSULTING CHEMIST 



'Phone. 823 John Now York 



ft 



NOT A 



,P 



BUYERS' DIRECTORY 74 



RAIN COAT 



UNLESS THIS OIRCTJLAB 

 REGISTERED TRADE- 

 MARK IS STAMPED ON 

 TEE INSIDE. 



AV6" %f 



Edited by HEN RY C. PEA RSON— Offices, No. 25 West 45th Street, NEW YORK. 



Vol. LI. No. 3. 



DECEMBER 1, 1914. 



35 CENTS. 



$3.00 Per Year. 

 $3.50 Abroad. 



r 



Crude Rubber and Compounding Ingredients 



A TEXT BOOK OF RUBBER MANUFACTURE 



By HENRY C. PEARSON 



Editor of The India Rubber World 



TABLE OF CONTENTS 



[With Condensed Titles of Chapters.] 



I. — Grades of Crude Rubber; Physical Characteristics. 

 II. — Some Little Known Rubbers and Pseudo Gums. 

 III. — Primary Processes — Washing, Mixing and Calendering. 

 IV. — Vulcanizing Ingredients and Processes. 

 V. — Ingredients used in Dry Mixing in Rubber Compounds. 

 VI. — Substitutes for India-rubber and Gutta-percha. 

 VII. — Reclaimed Rubber and Its Uses. 

 VIII. — Resins, Balsams, and Waxes used in Compounding. 

 IX. — Coloring Matters. 

 X. — Acids, Alkalis, and Their Derivatives. 

 XI. — Vegetable, Mineral, and Animal Oils. 

 XII. — Solvents used in India-rubber Proofing and Cementing 

 and in Commercial Cements. 

 XIII. — Miscellaneous Processes and Compounds, including 



Waterproofing Compounds. 

 XIV. — Physical Tests and Methods of Analysis of Crude 



Rubber and Vulcanized Rubber. 

 XV.— Gutta-percha. 



[A Pamphlet containing the Comprehensive Index of this Volume will be Sent Free on Application.] 



The India Rubber World 



No. 25 West 45th Street, New York 



LAMPBLACKS ESPECIALLY FOR RUBBER MANUFACTURE 



SAMUEL CABOT, INC* BOSTON, MASS. 



