THIS work appears in its English garb under the auspices of Sir W. Thomson.

Practical Guide for Compensation of Compasses without Bearings.

By Lieut. Collet French Navy, Tutor in the Polytechnique School of France. Translated by W. Bottomley. With a Preface by Sir W. Thomson, F.R.S., &c. (Portsmouth: Griffin and Co., 1885.)

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