The Ruthven Hydraulic Propeller Versus The Screw and Paddle. The Hydraulic in H.M.S. "Waterwitch," compared with The Double Screw in H.M.S. "Viper" and "Vixen". The Hydraulic Proved to Have Attained a

$275 · Offered by Between the Covers

London: Printed and published by J. Haddon and Co., 1869. Softcover. First edition. Octavo. 22cm. 63pp. Printed dark brown wrappers. Chips at the extremities, including a relatively large chip on the rear panel, the bottom third of spine perished, about very good. *OCLC* locates no copies. More

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