By D. Brown
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Aphids are famous as pests of agriculture, horticulture and forestry, yet also they are probably the most biologically fascinating teams of plant-feeding bugs, and hence have attracted the eye of biologists in lots of study fields reminiscent of ecology, biodiversity, body structure, behaviour and genetics.
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Extra resources for Cannabis. The Genus Cannabis
It is thought (Kalant, 1968) that it was only in the 19th Century that the euphoriant properties of cannabis were learnt of by the British in India, and the French in North Africa. , 1972), following the popularisation of American practices of the early twentieth Century. V. Published by license under the Harwood Academic Publishers imprint, part of The Gordon and Breach Publishing Group. , 1972), when it was introduced for hemp production by the Spanish. , 1972). The Mexicans are credited with the dissemination of this knowledge to English-speaking North America between 1920 and 1930 (Kalant, 1968).
GEOGRAPHICAL ORIGIN OF CANNABIS The history of cannabis is complex and it has not been possible to ascribe a precise geographical origin to the plant. The picture is complicated by a long history of human use of cannabis in many parts of the world, doubts over the distinction between wild, cultivated and escaped types, extensive transfer of its use and cultivation between cultures and the existence of much variety in the physical and chemical properties of the plant (Schultes, 1970). There is general agreement however, that cannabis is Asiatic in origin, but locations ranging from the Caspian Sea and Central and Southern Russia to Northern India and the Himalayas have been proposed as its native habitat (Schultes, 1970).
Ch. 1, pp. 1–14. J. , Ch. 7, pp. 205–226. F. (1991), Opium, cocaine and marijuana in American history, Scientific American, July, 20–27. F. (1996), Ancient Egyptian Medicine, British Museum Press, London, p. 156. V. Published by license under the Harwood Academic Publishers imprint, part of The Gordon and Breach Publishing Group. B. (1838), On the preparations of the Indian hemp or Gunjah, Transactions of the Medical and Physical Society of Bengal (1838–40), pp. 421–461. Parkinson, J. (1640), The Theater of Plantes—an Universal and Compleate Herbal, Cotes, London, p.