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Scientific American, Vol. 57, No. 22 (1887) (1887)
leaf 7
ployed. Be- larged—an appearance due to irradiation. to be added being regulated by practice. Only earth Without doubt the most striking illustrations of sides ordinary milling cutters, parallel or tapered colors or oxides of iron would be used for light red to irradiation are to be found in… … tus is likely to prove practically reported for the last two years has IMPROVED CUITER GRINDER.) useful. been but 45 and 27 respectively. © 1887 SCIENTIFIC AMERICAN, INC.Internet Archive · Public domain (published before 1931). Free to use for anything.
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