the materia medica. At Bombay, Gambrun, and Surat, in the East Indies, there grows a tree which bears a nut inclosed in a rough husk, which resembles much the horse-chesnut; and the kernel of the nut yields an oil by expression, which is of a purgative nature. A tea-spoonful of it is reckoned a dose. The tree goes by the name of the Arundel tree at Bombay, and its oil by that of the Arundel oil. Mr Sinclair, one of the surgeons belonging to the royal regiment of artillery, who was formerly surgeon to an East India ship, gave Dr Monro of London a small bottle full of this oil, which he said was much used for the cure of the dysentery in India, and that he had given it in four recent cases of dysentery with success. —Dr Monro thinks it probable that this is the oil of the purging nuts mentioned in Dale's Pharmacologia, which are got from the tree called Lignum Molucense, Pavona dictum, fructu avellanea, J. B. i. 342; and pinus Indica, nucleo purgante, C. B. 492; and the palma Christi Indica, Tournefort Mat. Med.