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Gustav Radde, director of the Imperial Museum of Natural History at Tiflis, Transcaucasia, who is the highest living authority on everything pertaining to the natural history of that region, wrote us recently as follows: "The only species of its genus Pyrethrum roseum, which gives a good, effective insect powder, is nowhere cultivated, but grows wild in the basal-alpine zone of our mountains at an altitude of from 6,000 to 8,000 feet."
Berichte der Deutschen Chemischen Gesellschaft, 14, 1662. In accordance with an announcement in the March number of the Naturalist, the editor of this department has sent out the seed of two species of pyrethrum, viz. P. roseum and P. cinerarioefolium, to a large number of correspondents in different parts of North America.
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