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" Dear Sir : — I beg to submit an abstract of all my reports on longitude hitherto made. Harvard Observatory, ivest of Greenwich. It. 111. s, (A) By moon-culminations, at Harvard, 1843-1845, . . . 4 44 28.47 Hudson, Ohio, 1838-1844, . . . 28.62 Wilkes's Observatory, 1838-1842. . 28.52 » " " Washington Observatory, 1845, . . 28.06 Mean by moon-culminations, . 444 28.42 (B) By eclipses, transits, and occultations, — At Dorchester and Harvard, 1820-1840,

In cooperation with the new National Observatory of Mexico the Harvard Observatory has agreed to construct the mounting of a Schmidt-type telescope, duplicating that made for the Oak Ridge Station.

HARVARD COLLEGE OBSERVATORY CAMBRIDGE, MASSACHUSETTS Hoveraber 30t 1926, Invoice of goods snipped by Harvard College Observatory, Cambridge, Mass*, via lew York,, consisting of two (3) cases consigned to Harvard Observatory Station, Arequipa, Peru, marked n ^nOO^^ Mollendo", witn numbers, contents, and value as follows!

HARVARD COLLEGE OBSERVATORY CAMBRIDGE, MASSACHUSETTS September 4, 1925. >""' invoice of goods shipped by Harvard College Observatory, Cambridge, Mass., via lew York, consisting of four (4j cases addressed "Port Agent, Chile Exploration Co., Antofagasta, Chile• For Harvard College Observatory", and consigned as addressed, with numbers, contents, and values as follows:* Bo. 746 30 doz. 8 x JO in.

HARVARD COLLEGE OBSERVATORY On September 23 and 24, the Observatory hosted the meeting of the Visiting Committee to the Harvard Astronomy Department.

Harvard College Observatory Circulars:- complete including No. 188. Harvard College Observatory Bulletins:- complete including 595«

INSTRUCTION AND RESEARCH With its three observing stations working on unified programmes with similar telescopes, the Harvard Observatory is enabled to carry out uniform surveys over the entire sky. The twenty-seven telescopes which form the basic equipment of the Observatory are listed in the accompanying table.

HARVARD COLLEGE OBSERVATORY, AREQUIPA STATION, AREQUIPA, PERL), S. A. 1836 Invoice of goods shipped by Leon Campbell,to Harvard Observatory,Boston,Mas3,via Mollendo and Panama.

Named for Alexander Hamilton (LL.D. 1792), first Secretary of the Treasury. HARVARD COLLEGE OBSERVATORY The Astronomical Observatory, now composed of four stations, was founded in 1839 and first located in the Dana-Palmer House, at the time on the site of the present Lamont Library.

TAU CENTRAL TELEGRAM BUREAU SMITHSONIAN OBSERVATORY | IBR CAMBRIDGE, MASS, 02138, USA PHILLIPS LIBRARY HARVARD. COLLEGE OBSERVATORY CAMBRIDGE, MASS. 02138 JuL 28 1969 FIRST CLASS 0 LOCAL MAIL 0,00 PHILLIPS’ LIBRARY HARVARD COLLEGE OBSERVATORY