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Scientific American, Vol. 49, No. 24 (1883) (1883)

leaf 0

An illustration from Scientific American, Vol. 49, No. 24 (1883), 1883, leaf 0 — e maneuver, and, on. the other, that the fatigue of the astronomer interferes with the pinion, Y, that transmits the circular motion of the sleeve, that portion of the instrument that carries the objective, and of a fixed part wherein sits theobserver. When itis desired R. (A strong toothed wheel… … © 1883 SCIENTIFIC AMERICAN, INC

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