Excerpt from A Contribution Three Cruises Thalassography, Vol. 1 of 2: Three Cruises of the United Coast and Geodetic Survey, Steamer "Blake, " in the Gulf of Mexico, in the Caribbean Sea, and Along, the Atlantic Coast of the United States, From 1877 to 1880

During. The season of 1877 - 78 the dredging operations carried on from December to March by the Blake, in command of lieut.-commander C. D. Sigsbee, U. S. N., extended from Key West to Havana, from Havana westward along the north coast of Cuba, from Key West to the Tortugas, thence to the north ern extremity of the Yucatan Bank, to Alacran Reef, back to Cape Catoche, and across to Cape San Antonio, returning to Key West, and from Key West to the Tortugas, and northward to' the mouth of the Mississippi River. See track of Blake, Fig. A. After I left the Blake that year, Sigsbee occupied a number of stations off Havana in search of Pentacrinus, of which we had obtained a quantity of fragments in the early part of the cruise. He succeeded in discovering their haunts, and was the first to dredge a number of specimens from a locality not far from the Morro Light, which has become known as Sigbee's Pentacrinus ground.

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