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These green-coloured coils of special incense are used widely in Japanese homes during the summer months; they have virtually eliminated the need for mosquito nets as protection against disease-carrying insect pests. The active ingredient of the coil is pyrethrum, which is obtained from the flowers (dried and powdered) of pyrethrum varieties of chrysanthemum, notably C. coccineum. The plant is native to Japan and it has also been cultivated widely for use in insecticides. Pyrethrum is non-toxic to humans and warm-blooded animals but it is toxic to insects and cold-blooded vertebrates.
This rock sample was brought back from the summit of Mount Everest by a team of climbers representing the Japan Mountaineering Association; two members of this team, Matsuura and Uemura, reached the 8,848-metre summit of the world's highest mountain on May 11th, 1970. The rock was displayed in the Matsushita Pavilion at Expo '70 from June 28th. Its smooth and colourless surface clearly shows its neptunian origin, suggesting that in the primaeval period the summit of Mount Everest was below sea level.
The contents of this site are excerpted from THE OFFICIAL RECORD OF TIME CAPSULE EXPO'70(March 1975). Please note that company and organization names may differ from those of the current ones.
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