In Mauritius the juice is used to treat dysentery and hepatitis. Padre Blanco says that the natives use a decoction of camias and unthreshed rice in diarrhoea and bilious colic. In connection with the subject of camias and balimbins we should mention the fruit treatment of the bilious diarrhoea of the tropics, spoken of by the French physicians of Cochin China. Dr. Van der Burg of the Dutch Indies also strongly recommends the treatment of diarrhoea by fruits; in temperate regions using fruits like peaches, pears, etc., and in the tropics, lychies, mangosteens, etc. In regard to the mangosteens we must not forget that, while the bark is given because of the amount of tannin it contains, the composition of the pulp is very different. The fruit acids seem to exercise great influence in the cure of this obstinate disease and I do not hesitate to recommend for this purpose the camia and the ripe balimbin. Botanical Description.--A tree much like the former. Leaves odd-pinnate. Leaflets, 3-4 pairs, obliquely ovate, acute, the terminal leaflet nearly lanceolate. Flowers on the trunk, branches and in the axils of the leaves. Fruit oblong, with 5 very prominent acute-angled ribs. Habitat.--It grows, like the former plant, in all parts of the islands. RUTACEÆ. Rue Family. _Ruta graveolens, L._ (_L. angustifolia_, Pers.) Nom. Vulg.--_Rudu_, Sp.; _Rue_, Eng. Uses.--The rue of the European, American and Indian pharmacopoeias is emmenagogue, antispasmodic, anthelmintic, excitant, diaphoretic, antiseptic and abortive. It contains an essential oil, and rutinic acid (C_25_H_28_O_15_, Borntrager), starch, gum, etc. The essential oil is greenish-yellow, thick, acrid and bitter; specific gravity 0.911. It boils at 228°, is slightly soluble in water, and soluble in absolute alcohol. It is promptly oxidized by nitric acid, and is converted into pelargonic acid and other fatty acids. Rutin (or rutinic acid), according to Weiss, is a glucoside which exists in the form of fine needles, bright yellow in color. It is slightly soluble in cold water and more so in boiling water. It melts at 190°, and solidifies at freezing point, forming a resinous mass. Its physiological properties are as yet unknown. The part of the plant employed is the leaves, which owe their property, apparently, to the essential oil they contain, from which they also derive their strong and disagreeable odor and their bitter, acrid and nauseous taste.