Australia, Coral Sea and Great Barrier Reefs shewing the inner and outer routes to Torres Strait. Sheet 2 : from the surveys of Captains Blackwood, Owen Stanley, and Yule, R.N., 1842-50 : the outer detached reef's from Captains Flinders and Denham, RoyalEvans, F. J. (Frederick J.)Great Britain. Hydrographic DeptJ. & C. Walker (Firm)Potter, J. D. (John D.)Washington CaptDecr. 12th 1860."2764".Imperfect: Mutilated with loss of texNautical chart of the Great Barrier Reef and the Coral Sea showing routes to the Torres Strait. Relief is shown by hachures and spot heights. Depth shown by bathymetric soundings.On verso: XXVIII.cartographic