The voyage of the Challenger. The Atlantic: A preliminary account of the general results of the exploring voyage of H.M.S. Challenger during the year 1873 and the early part of the year 1876. By Sir C. Wyville Thomson. In two volumes. Volume I. [Volume II] Published by authority of the Lords of the Almiralty - Thomson, Wyville (Macmillan and Co, 1877)