Part 2 (2/2)

7. How did rubber first come to the United States?

8. Why are some raincoats called mackintoshes?

9. Why is Charles Goodyear called ”the father of the rubber industry”?

10. What is ”vulcanizing”?

11. What famous men fought in court over the patents?

12. What has a beetle to do with rubber?

13. Name and describe the liquid in which rubber is found?

14. In what part of the tree is this liquid found?

15. What is the difference between this liquid and the sap of a tree.

16. Name and describe the best rubber tree.

17. How are the seeds spread?

18. What climate is needed for rubber trees?

19. Which country formerly supplied all the rubber used in the world?

20. Who first thought of growing rubber trees on plantations?

21. Why did he think it was better to grow them on plantations?

22. How were the rubber seeds taken from Brazil?

23. On what tropical island was the first plantation started?

24. Where are rubber plantations found to-day?

25. What is the yearly output of the plantations?

26. What was the curious coincidence in the growth of the plantation industry?

27. What is meant by the Rubber Belt around the world?

28. What countries are the princ.i.p.al producers of rubber?

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