Ben

Ben, OIL OF, a fluid fixed oil, obtained from the seeds of a tree found in India and Arabia, and known as the Horse-radish Tree (Moringa pterygosperma). The seeds are called Ben Nuts, and are roundish, with three membranous wings. The oil has several properties which make it of special value to perfumers and watchmakers. When exposed to cold, it deposits a white flaky matter; and when this is removed, an oil is left which is most suitable for watches owing to its non-liability to freeze. Oil of ben is also used to extract the odorous principles from flowers; and as it is not liable to turn rancid, it is much prized in the manufacture of perfumes, although its frequent adulteration with other oils has tended to restrict its use. See HORSE-RADISH TREE.