Jade is one of the oldest of mineralogical materials used by primitive man. It was used in the construction of hatchets, chisels, and ornaments. Such articles have been found in many localities in North America, Asia, Europe, and New Zealand. The source of the jade found in Europe was for many years unknown, a fact which caused extended controversy concerning the methods of commercial intercourse of pre-historic man. Jade has long been a much prized mineral both for ornamental and religious purposes among the Chinese, its use dating back at least as far as 2852 B.C. Objects, some of which undoubtedly required a life time to carve with a hand drill, have found their way into several large collections. The most notable collection available to the American public is the Bishop Collection in the Metropolitan Museum of Art, New York City.