CHAPTER XIII.
EBONITE, VULCANITE AND GUTTA-PERCHA.
Ebonite and Vulcanite--Manufacture--Manipulation--Gutta-Percha and its Manipulation 108
EBONITE, VULCANITE AND GUTTA-PERCHA.
Ebonite and Vulcanite--Manufacture--Manipulation--Gutta-Percha and its Manipulation 108