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Scientific American, Vol. 62, No. 4 (1890) (1890)

leaf 3

An illustration from Scientific American, Vol. 62, No. 4 (1890), 1890, leaf 3
d California Streets, San Fran- level or an up grade. Fig. 1 is a vertical transverse cisco, the principal paper of the evening was read by section, and Fig. 2a plan view. A shaft geared to the E. E. Barnard, Lick Observatory, on some photographs vetiicle axle carries a sprocket wheel and a spur… … head block, links pivotally connecting the outer end in the region about M 11 on August of the head block with the lower end of the sliding 2, with exposure 2 h. 45 m., and another ey | a as Cen eee standard. There is a foot rest at the side of one of of the Milky Way (right ascension gear wheel…

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