Urceola Elastica

A plant belonging to the _Apocynaceae_, a native

of the islands of Borneo and Sumatra, where its milky juice,

collected by making incisions in its soft, thick, rugged bark, or

by cutting the trunk into junks, forms one of the kinds of

caoutchouc called juitawan, but it is inferior to the South

American, chiefly owing to want of care in its preparation, the

milky juice being simply coagulated by mixing with salt water,

instead of being gradually inspissated in layers on a mold. The

fruit contains a pulp which is much eaten by the natives.