The Cambodian doctors, according to M. Paul d'Enjoy, largely use vegetable poisons as medicines, and apply them with very great skill; and they are often possessors of recipes, the secret of which is carefully kept within the family. They pretend to be acquainted with the love philter, and sell at a very high price a colorless oil with which the young men impregnate their lips in hopes of winning the young women through its magical power. The Cambodian bonzes have established in the vicinity of their monasteries, and the Annamites near their pagodas and under their own direction, refuges where the sick are taken care of gratuitously. The institutions are sustained by public charity and by the generous gifts of patients. Many of the wealthy are not ashamed to have themselves taken to these asylums, hoping that their cure may be made more complete through the protection of the ministers of God, under whose care they place themselves. Insect chrysalides seem totally inert, and to the ordinary observer suggest a mummy rather than anything else. Yet, when occasion arises, they are able to manifest their vitality and even to be active. M. G. de Rocquigny Adanson, studying some Saturnias, opened a few of the cocoons, and having examined the insects, put them in a box in which the place of their broken silken envelope was supplied by cotton wadding. Three weeks afterward he found that they had changed position, and, examining them more closely, that they had thrown out threads and fastened themselves to the cotton. Madame Elisée Reclus, studying natural history in Switzerland, had some Vanessas much shaken by the jolts in descending the mountain, and afterward more shaken on the railway train. Observing them after they had enjoyed a few hours of quiet at home, she found that they had changed position, and, having thrown out threads and cross threads, had fastened themselves firmly to the lid of the box in which they were kept.