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Scientific American, Vol. 56, No. 26 (June 1887) (1887)

leaf 4

An illustration from Scientific American, Vol. 56, No. 26 (June 1887), 1887, leaf 4
he thread that is not cut as a file operating one of which is hidden by the body of the machine, of which is an annular distributer, its inner surface hav- as a gauge to limit the depth of cut made by the file are intended to travel one upon each side of a line of section of the thread. After the… … quantity of silica and a small percentage of vana- The author puts 100 or ROHLING'S COTTON PICKER. dium oxide. The formula given by the authors was 50 c. c. in a roomy separat- CaO.P2O6.CaO.SiO2. In addition to the above, crys- ing funnel after acidifying tals of a feather-like form, containing a…

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