Compiled from the surveys of Captains H. Kellett and R. Collinson R. N., Lieut. M. Gordon R. N., J. Richards, E. Wilds, and G. Stanley, Masters R. N. 1867; London, published at the Admiralty August 15th, 1867 under the superintendence of Captain G. H. Richards R. N; F. R. S. Hydrographer