"So it is when dissolved in alcohol, as we generally have it; but it is also used in lumps to drive away moths and for various other purposes. But I will tell you all about the tree, which grows in the islands of Sumatra and Borneo and bears the botanical name _Dryobalanops camphora_. The camphor is also called _barus_ camphor, to distinguish it from the _laurus_, of which I will tell you afterward, and it is of a better quality and more easily obtained. The tree grows in the forests of these East Indian islands and is remarkable for its majestic size, dense foliage and magnolia-like flowers. The trunk rises as high as ninety feet without a single branch, and within it are cavities, sometimes a foot and a half long, which cannot be perceived until the bark is split open. These cavities contain the camphor in clear crystalline masses, and with it an oil known as camphor oil, that is thought by some to be camphor in an immature form. But the oil, even when crystallized by artificial means, does not produce such good camphor as that already solidified in the tree."