52 



A^atlo rt station °*" J }1 P an - The geographical position of some of these re- 

 continued. ported dangers, whose latitude and longitude were doubt- 



ful, were definitely established; while the existence of 

 others was disproved. Rear-Admiral Clitz, commanding 

 the Asiatic Station, forwarded to the Office the results of a 

 survey of Okosiri Island, Japan, made by the British. 



The Alliance, Commander Wadleigh, transmitted valua- 

 ble information on the currents, tides, winds, &c, of the 

 coast of Iceland. 



The Shenandoah, Captain Kirkland, forwarded data veri- 

 fying previous surveys of the basin of the Rio de la Plata; 

 and the Brooklyn, Captain Weaver, furnished information 

 in regard to obstructions to navigation in the harbor of 

 Montevideo. 

 Reports from From the European Station, hydrographic reports were 

 tion? pean a received from the Quinnebaug, Commander Farquhar, con- 

 cerning a number of ports on the east shore of the Medi- 

 terranean ; from the Galena, Commander Bacheller, on Al- 

 exandria, Gibraltar, and the ports of the west coast of Mo- 

 rocco; and from the Trenton, flag-ship of the station, Cap- 

 tain Ramsay, a report of an error in the longitude of the 

 Balearic Islands. 



The Essex, Commander McCormick, discovered errors in 

 the sailing-directions for the west coast of Africa, and for- 

 warded data for their correction. 



A survey of the Boca del Toro, on the east coast of Costa 

 Rica, was made by officers of the Vandalia, Captain Meade, 

 and information was also received from that vessel regard- 

 ing various ports of the West Indies. 



Other reports on harbors, positions of wrecks, and changes 

 in buoys, lights. &c, in the West India Islands, on the east 

 coast of Mexico, Central America, and on the Gulf coast of 

 the United States were transmitted to the Office from the 

 Kearsarge, Commander G. B. White; the Adams, Com- 

 mander Merriman ; and the Yantic, Commander Woodward. 

 The Marion, while on her visit to Heard Island, to rescue the 

 crew of the American ship Trinity, made a chart of that 

 island, including the adjacent Macdonald group of islets. 

 Thirty-three charts were published during the year, of 

 Publications of which twenty-three were engraved, four heliographed, and 



the Office. * . ..,, - , 



six lithographed. 





