Collier's Encyclopedia defines marijuana as a crude drug composed of the leaves, stems, and flowering buds of the Indian hemp plant, Cannabis sativa. The flowering tops of the plant secrete a sticky resin that contains the psychoactive material for which marijuana is used. There are both male and female hemp plants; however, the female plants contain denser flowering clusters; therefore it is preferred. Hashish is also a crude drug produced from the hemp plant. It differs from marijuana in being made of only the flowering buds, whereas marijuana is made up of flowering tops and leaves (392).
The earliest known use of marijuana, is as an ingredient in a Chinese herba
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