etrated significantly into many native American religious beliefs and ceremonies. There are, however, exceptions such as its use under the name Rosa Maria, by the Tepecano Indians of northwest Mexico who occasionally employ Hemp when Peyote is not available.It has recently been learned that Indians in the Mexican states of Veracruz, Hidalgo, and Puebla practice a communal curing ceremony with a plant called Santa Rosa, identified as Cannabis Sativa, which is considered both a plant and a sacred intercessor with the Virgin. Although the ceremony is based mainly on Christian elements, the plant is worshipped as an earth deity and is thought to be alive and to represent a part of the heart of God.The participants in this cult believe that the plant can be dangerous and that it can assume the form of a man's soul, make him ill, enrage him, and even cause death. Sixty years ago, when Mexican laborers introduced the smoking of marijuana to the United States, it spread across the south, and by the early 1920s, its use was established in New Orleans, confined primarily among the poor and minority groups.The continued spread of the custom in the United States and Europe has resulted in a still unresolved controversy.Cannabis Sativa was officially in the United States Pharmacopoeia until 1937, recommended for a wide variety of disorders, especially as a mild sedative. It is no longer an official drug, although research in the medical potential of some of the cannabinolic constituents or their semi-synthetic analogues is at present very active, particularly in relation to the side-effects of cancer therapy.The psychoactive effects of Cannabis preparations vary widely, depending on dosage, the preparation and the type of plant used, the method of administration, personality of the user, and social and cultural background. Perhaps the most frequent characteristic is a dreamy state.Long forgotten events are often recalled and thoughts occur in unrela...