Scientific Drops.
The great telescope of Lord Rosse has a speculum 6 feet diameter, 55 feet focus. To make one pound of honey the beea must visit from 90,000 to 200,000 flowers. Dr. Dowd, oE New York, has found that eaoh cubio inch of soil contains from 60,000 to 2,250,000 minute organisms, A fly-wheel weighing over 20 tons and 20 feet in diameter, with a 42-inch face is a casting of no mean measurement. Such a one was recently cast in America. Liquid oxygen turns out to be blue. Hitherto it has been described as colorless. M. Olszewski, of Moscow, who has just made the discovery, suggests that the color of the sky may be due to the atmospheric oxygen. Molds for casting iron can only be made in sand. Iron or other metallic molds chill the iron and it does not fill well. The great heat at which iron melts will burn any other material, or will stick so as to break the mould. 300
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Bibliographic details
Golden Bay Argus, Volume 2, Issue 1, 3 June 1892, Page 3
Word Count
166Scientific Drops. Golden Bay Argus, Volume 2, Issue 1, 3 June 1892, Page 3
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