
Sleep Story 257 - Rubber Hand Stamps
Bore You To Sleep - Sleep Stories for Adults
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The History of India Rubber
India rubber sap may be coagulated by an aqueous solution of alum. The process has been tried in Brazil and is used to a considerable extent in Purnabuco. Unvulcanised kachuk possesses very interesting and peculiar properties. It cannot to any considerable extent be changed by heat, short of absolute destruction or decomposition. In simple forms it is highly elastic and is insoluble in almost every solvent for ordinary kachuk. After solidifying overnight it is cut open and the paddle or mould is removed.
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