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nplete model plant. Ex- 

 tal and testing work of all 

 Try your ideas on a small 



IICKJ.MAYWALD.F.C.S. 



^SVLTING CHEMIST 



, New York 



23 John ^45 



Founded 1837 BOSTON, MASS. Inc. I! 



Manufacturer* of 

 DIVING DRESSES WADING PAJ 



MOULDED GOODS CEMEl 



UNVULCANIZED GUMS OF ALL KINDS. 

 Rubber Washed, Dried, Treated and She* 



J. B. Pat. Oft. 



Gum- 



Reg. Unltfd ElDgdom. 



Edited by HENRY C. PEARSON— Offices, No. 25 West 4Sth Street, NEW YORK. 



Vol. LV. No. 6. 



MARCH I. 191 7 



35 CENTS. 



$3.50 Per Year. 

 $3.50 Abroad. 



^^^^ 



nec^u.S' PAT. OPK 



The Faultless Rubber Company 



ASHLAND, OHIO, U. S. A. 



Manufacturers of 



Rubber Sundries— Water Bottles— Syringes— Surgical 

 Rubber Goods— Surgeons', Household and Electri- 

 cians' Rubber Gloves— Sponges— Sponge Products- 

 Transparent Nipples— Tubing— Finger Cots— Balls— 

 Balloons— Toys — Novelties— Bathing Caps— Etc. 



Under These Trade Marks 



C^^^ Kiaxmr rhalleng p 



LAMPBLACKS ESPECIALLY FOR RUBBER MANUFACTURE 



SAMUEL CABOT, INC., BOSTON. MASS. 



^V ISLA.ND 



R. J.CALDWELL CO.,Inc. 



IVflLLS AX 

 DAINJIELSOrV, COIVISf 

 SHERBROOKE. F»-0 



