REPORT ON THE OPERATIONS OF EXCHANGES. Ill 



Hydrographic OflSce — Continued. 



Charts published during the year: 



No. 456. GulfofYeddo. 



No. 906. Wrangel Island. 



No. 907. Rodgers Harbor. 



No. 908. Rodgers Track. 



No. 911 a. Circumpolar chart. 



No. 911 b. Circumpolar chart. 



No. 912. Arctic Sea. 



No. 887. Amazon River, sheet 1. 



No. 307. Havana, Cuba. 



No. 888. Amazon River, sheet 2. 



No. 889. Amazon River, sheet 3. 



No. 890. Amazon River, sheet 4. 



No. 891. Amazon River, sheet 5. 



No. 892. Amazon River, sheet 6. 



No. 893. Madeira River, sheet 1. 



No. 894. Madeira River, sheet 2. 



No. 348. Port Royal, Kingston Harbor, Jamaica. 



No. 823. South Pacific Ocean, eastern sheet, lower part. 



No. 823 a. South Pacific Ocean, eastern sheet, upper part. 



No. 622. Coast of Mexico. 



No. 920. Port Malaga, Spain. 

 Nautical Almanac : 



American Nautical Almanac for 1885. 

 American Nautical Almanac for 1886. 

 American Ei)hemeris and Nautical Almanac for 1885. 



Supplement to the American Ephemeris and Nautical Almanac for 1881-1884. 

 Astronomical Papers of the American Ephemeris, part 6. 

 Astronomical Papers of the American Ephemeris, Vol. I. 

 Bureau of Steam-Engineering : 



Report of the Board on the Mallory Steering and Propelling Screw as applied to 



the United States torpedo-boat "Alarm." 

 Report on the vedette boats constructed for British and French navies by the 



Herreshof Manufacturing Company. 

 Annual Report for 1882. 

 Admiral's Office : 



Annual Report. 

 Bureau of Medicine and Surgery : 



Annual Report 1880. 

 Bureau of Provisions aud Clothing: 



Pay-table of the United States Navy. New edition. 

 Bureau of Yards and Docks : 

 Annual Report for 1882. 

 Naval Observatory : 



Astronomical aud Meteorological Observations for 1878. 4°. 



Appendix 1, 1878 : Monograph of the Centrel Parts of the Nebulae of Orion. 230 p, 



43 illustrations. 4°. 

 Appendix 2, 1878 : Longitude of the Observatory of the John C. Green School of 



Science, Princeton, N. J. 54 p. 4° . 

 Meteorological Observations for 1878. 18 p. 4°. 



Appendix 1. V for 1879. Parallax of A Lyrie and 61 Cygni. 64 p. 4°. 

 Instructions for observing the Transit of Venus, December 6, 1882, prepared bv 



the commission authorized by Congress. 50 p. 4 plates. 4°. 



