The Carnegie Institution of Washington . d similar stellar bodies. In 1906, Mr. John D. Hooker, of Los Angeles, California, gener-ously provided funds for the construction of a mirror 100 inches indiameter for an additional telescope of the reflecting type, and workon this enterprise is now nearing completion at the observatory shopsin Pasadena. 44 MOUNT WILSON SOLAR OBSERVATORY. The Mount Wilson Observatory has the following equipment inbuildings, in addition to various cottages, water reservoirs, storehouses, and other minor structures: At Pasadena, California. i. Office and Library building


The Carnegie Institution of Washington . d similar stellar bodies. In 1906, Mr. John D. Hooker, of Los Angeles, California, gener-ously provided funds for the construction of a mirror 100 inches indiameter for an additional telescope of the reflecting type, and workon this enterprise is now nearing completion at the observatory shopsin Pasadena. 44 MOUNT WILSON SOLAR OBSERVATORY. The Mount Wilson Observatory has the following equipment inbuildings, in addition to various cottages, water reservoirs, storehouses, and other minor structures: At Pasadena, California. i. Office and Library Instrument shop. 3. Hooker optical shop. 4. Physical laboratory. On Mount Wilson. 5. Steel building and dome for 60-inch reflector. 6. Steel building and dome for 100-inch reflector. 7. Snow telescope. 8. 60-foot tower telescope. 9. 150-foot tower 6-inch equatorial dome. 11. 10-inch photographic telescope dome. 12. Astrophysical museum. 13. Physical laboratory. 14. Monastery. 15. Power house. 16. Storage-battery Pasadena Office Building, Solar Observatory. DEPARTMENT OF HISTORICAL RESEARCH. Director, J. Franklin Jameson. Address, Woodward Building, Washington, D. C. PRESENT INVESTIGATORY STAFF. Edmund C. Burnett. Waldo G. Leland. Frances G. Davenport. Charles 0. Paullin. Elizabeth P. Donnan. Leo F. Stock. In the summer of 1902, a committee of the American HistoricalAssociation submitted to the Institution a memorial suggestingmethods for the promotion of historical research. This memorialwas followed by a report of a special advisory committee on historyappointed by the Institution, and in February 1903 a department ofhistorical research was temporarily organized under the directorshipof Professor A. C. McLaughlin. It was originally designated theBureau of Historical Research. Professor McLaughlin continued hisservices as Director until October 1, 1905, when he resigned and wassucceeded by Professor Jameson. At the same time the presentdesignation of t


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