Jacaranda.—Several species of this genus (Fam. Bignoniaceae) are employed in syphilis in Brazil and other portions of South America under the names of caroba, carobinha, etc. Peckolt (A. J. P., 1882, 134) has found in them a crystalline substance, carobin, besides resins and acids, such as carobic and steocarobic acids, and carobon, caroborelinic acid, and caroba balsam. Hesse (Ann. Chem., cclii, 150) found only an aromatic resin, but no alkaloid. The value of the remedy has been asserted in the B. M. J., vol. i, 1885. For further information, consult P. J., 3d series, vols. v, xii, and xiv, and also A. J. P., 1882.