The Probert Encyclopaedia of Nature

HEMP

Hemp is an annual herb of the genus Cannabis, natural order Cannabinaceae with an erect, hairy stem and palmately divided, long-stalked leaves with serrate edges, formerly cultivated for its fibres that are used to make rope. The plant is dioecious: the male flowers are arranged in panicles, are green, resembling those of the hop and produce large quantities of pollen; the female flowers grow in leafy spikes in the leaf axils and are pollinated by the wind. The fruit is a shiny, greyish-green achene.

Hemp is a native of Western and Central Asia, but has long been naturalized in Brazil and tropical Africa, and was extensively cultivated in Italy and many other European countries, particularly Russia and Poland. The Indian variety, often known as Cannabis indica, is the source of the narcotic drug variously known as hashish, bhang, or gunjah or simply cannabis.The oil and leaves of Indian hemp contain tetrahydrocannabinol, cannabinol and cannabidol, which have sedative, analgesic and antispasmodic properties.

The derivatives of hemp (hashish and cannabis being the oil and dried leaves respectively) are widely smoked for their narcotic effects and are also effective in the treatment of many illnesses including multiple- sclerosis, though their use is banned in the UK, where it is an offence to grow, possess or sell hemp without a government license.

The hemp fibre is tough and strong, and peculiarly adapted for weaving into coarse fabrics such as sail-cloth, and for twisting into ropes and cables. Immense quantities were exported from Russia. The finer sorts were used for shirtings, sheetings, etc, which, though coarser than that made from flax, were very much stronger and equally susceptible of being bleached.

The hemp of England was very superior, but the plant dis not pay the farmer, and very little of it was grown. In some of the United States during the 19th century hemp was a crop of considerable importance.
Research Hemp