that the deleterious quality exists in the gum; a small portion of which still adhering, produces, when exposed to wet, this irritating effect: and it is singular, that this property of the prepared bark is known to the Javans in all places where the tree grows, while the preparation of a poison from its juice, which produces a mortal effect when introduced into the body by pointed weapons, is an exclusive art of the inhabitants of the eastern extremity of the island. The stem of the anchar having arrived at the above-mentioned height, sends off a few stout branches, which spreading nearly horizontally with several irregular curves, divide into smaller branches, and form a hemispherical, not very regular, crown. Previous to the season of flowering, about the beginning of June, the tree sheds its leaves, which reappear when the male flowers have completed the office of fecundation. It delights in a fertile, not very elevated, soil, and is only found in the largest forests. One of the experiments to be related below was made with the upas prepared by myself. In the collection of the juice I had some difficulty in inducing the inhabitants to assist me; they feared a cutaneous eruption and inflammation, resembling (according to the account they gave of it) that produced by the ingas of this island, the rhus vernix of Japan, and the rhus radicans of North America. The anchar, like the trees in its neighbourhood, is on all sides surrounded by shrubs and plants: in no instance have I observed the ground naked or barren in its immediate circumference. The largest tree I met with in Balambangan, was so closely environed by the common trees and shrubs of the forest in which it grew, that it was with difficulty I could approach it. Several vines and climbing shrubs, in complete health and vigour, adhered to it, and ascended to nearly half its height; and, at the time I visited the tree and collected the juice, I was forcibly struck with the egregious misrepresentation of Foersch. Several young trees spontaneously sprung from seeds that had fallen from the parent, put me in mind of a line in Darwin's Botanic Garden:-- 'Chain'd at his root two scion-demons dwell;' while in recalling his beautiful description of the upas, my vicinity to the tree gave me reason to rejoice that it was founded in fiction.