The wonders of the world

by John Loraine Abbott

THE UPAS, OR POISON-TREE.

Although a serious refutation of the gross imposition practiced on the people of Europe, by the romance of Foersch, on the subject of the upas, or celebrated poison-tree of Java, may at this time be in a great measure superfluous, as the world has long ceased to be the dupe of his story, and as regular series of experiments have been instituted both in England and in France, to ascertain the nature and potency of the poison; yet an authentic account of this poison, as drawn out by Doctor Horsfield, and given in the seventh volume of the Batavian transactions, can not fail to be interesting. Almost every one has heard of its fabulous history, which, from its extravagant nature, its susceptibility of poetical ornament, its alliance with the cruelties of a despotic government, and the sparkling genius of Darwin, whose purpose it answered to adopt and personify it as a malignant spirit, (in his “Loves of the Plants,”) has obtained almost equal currency with the wonders of the Lernian hydra, or any other of the classic fictions of antiquity.

Although, as Doctor Horsfield observes, the account published by Foersch, so far as relates to the situation of the poison-tree, to its effects on the surrounding country, and to the application said to have been made of the upas on criminals in different parts of the island, has, as well as the description of the poisonous substance itself, and its mode of collection, been demonstrated to be an extravagant forgery; yet the existence of a tree in Java, from the sap of which a poison is prepared, equal in fatality, when thrown into the circulation, to the strongest animal poisons hitherto known, is a fact which it is his object to establish and illustrate. The tree which produces this poison is the anchar, and grows in the eastern extremity of the island. The work of Rhumphius contains a long account of the upas, under the denomination of arbor toxicaria. The tree does not grow in Ambonia, and his description was made from the information he obtained from Macassar. His figure was drawn from a branch of what is called the male-tree, sent to him from the same place, and establishes the identity of the poison-tree of Macassar, and the other eastern islands, with the anchar of Java. The simple sap of the arbor toxicaria (according to Rhumphius) is harmless, and requires the addition of several substances of the affinity of ginger, to render it active and mortal. In so far it agrees with the anchar, which, in its simple state, is supposed to be inert, and, before being employed as a poison, is subjected to a particular preparation. Besides the true poison-tree, the upas of the eastern islands, and the anchar of the Javans, this island produces a shrub, which, as far as observations have hitherto been made, is peculiar to the same, and by a different mode of preparation, furnishes a poison far exceeding the upas in violence. Its name is chetik; but the genus to which it belongs has not yet been discovered or described.

The anchar is one of the largest trees in the forests of Java. The stem is cylindrical, perpendicular, and rises completely naked to the hight of sixty, seventy, or eighty feet. It is covered with a whitish bark, slightly bursting in longitudinal furrows. Near the ground this bark is, in old trees, more than half an inch thick, and, upon being wounded, yields plentifully the milky juice from which the celebrated poison is prepared. A puncture or incision being made into the tree, the juice or sap appears oozing out, of a yellowish color from old trees; but paler, or nearly white, from young ones; and when exposed to the air, its surface becomes brown. The consistence very much resembles milk; but it is more thick and viscid. This sap is contained in the true bark, (or cortex,) which, when punctured, yields a considerable quantity, so that in a short time a cupful may be collected from a large tree. The inner bark (or liber) is of a close fibrous texture, like that of the morus papyrifera, and, when separated from the other bark, and cleansed from the adhering particles, resembles a coarse piece of linen. It has been worked into ropes, which are very strong; and the poorer class of people employ the inner bark of the younger trees, which is more easily prepared, for the purpose of making a coarse stuff, which they wear in working in the fields. But it requires much bruising, washing, and a long immersion, before it can be used; and, when it appears completely purified, persons wearing this dress, being exposed to rain, are affected with an intolerable itching, which renders it insupportable. It appears from the account of the manner in which the poison is prepared, 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.