(Quasi Jovis giant, the nut of Jupiter). The walnut. The tree is sometimes called carya, the appellation of walnuts rendered black by boiling; and the rob diacaryon: nux regia, basilica, Persica, et Euboica; caryon; caryon basilicon; juglans regia Lin. Sp. Pl. 1415.
The kernel and its oil resemble those of almonds; the shells are astringent: an ointment made by boiling the leaves of walnut tree in lard is said to be an useful application to haemorrhoids and old ulcers; the bark and the catkins are strong emetics; the juice of the root an active cathartic, and the powdered leaves anthelmintic. The unripe fruit, which has a bitter astringent taste, is an anthelmintic laxative. Two drachms of the inspissated juice are added to four drachms of cinnamon water, and from twenty to fifty drops given two or three times a day, for six days; interposing a purgative, with calomel, on the fourth. Gargles made of the rob, dissolved in any convenient vehicle, may be used in aphthae and sore throats. Vinegar, in which walnuts" have been pickled, is said to be a very useful gargle.