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Chiefly covers the 19th-20th centuries.
The history of Para rubber. History of rubber plantations. Botanical sources of rubber. Climatic conditions for Hevea brasiliensis; Rate of growth of Hevea brasiliensis. Planting operations and methods of cultivation. Cultivation of cath and intercrops. Hevea rubber soils and manuring. Tapping operations and implements. How to tap. Where to tap. When to tap. How notable estates are being tapped. Effects of tapping. Tapping and yields in the Amazon Region. Yields in Malaya. Yields in Ceylon and South India. Yields n the dutch East Indies, Borneo, Africa, etc...