GUTTA-PERCHA, the inspissated juice of a tree found in the Malay Archipelago.
"The Nuttall Encyclopaedia" by Edited by Rev. James Wood
In Borneo ten trees were felled for every kilogramme of gutta-percha.
"From Pole to Pole" by Sven Anders Hedin
A substitute for gutta percha is obtained by boiling the bark of the birch tree, especially the outer part, in water over an open fire.
"Scientific American Supplement, No. 1157, March 5, 1898" by Various
Sumatra is also the home of several trees and plants from which gutta-percha is obtained.
"Wealth of the World's Waste Places and Oceania" by Jewett Castello Gilson
Gutta percha trees often attain a height of 70 to 100 ft. and the trunk has a diameter of from 2 to 3 ft.
"Encyclopaedia Britannica, 11th Edition, Volume 12, Slice 6" by Various