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Scientific American, Vol. 69, No. 20 (1893) (1893)

leaf 15

An illustration from Scientific American, Vol. 69, No. 20 (1893), 1893, leaf 15
e as deseribed for conveying ROOFING, LIQUID PAINTS, ASBESTOS MANUFACTURES, For applying steps to Elec- the sounds; and the eighth, of a perma- NON-CONDUCTING AND INSULATING MATERIALS, tric Light Poles, it has no supe- nent magnet and plate combined. The rior. claim is not for these several things… … Descriptions, Locations, Estimated Cost, etc. sum of the angles of atriangle, surface of the sphere, ELECTRICITY ¥ IN * MINING. with 6 illustrations. Contained in SCIENTIFIC AMERI- The elegance and cheapness of this magnificent work CAN SUPPLEMENT, No. 87>. Price 10 cents. To be have won for it the…

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