1. Rubber in Brazil
The other is the Castilla ulei, from which rubber can be extracted only by cutting down the tree . ... No source of rubber comparable to the Hevea tree has been found in any other part of the world, although most of the world's rubber now comes from a variety of Hevea which is much more productive than the native wild trees of the Amazon . ... There could be no supervision of the tapping methods and no care of the trees to insure their continued productivity. ... Some very industrious workers, good rifle-shots and handy with the bow and arrow shooting fish, often manage to save consi...
- Word Count: 3885
- Approx Pages: 16
- Has Bibliography
- Grade Level: Undergraduate