210 ANNUAL REPORT SMITHSONIAN INSTITUTION, 19 64 



TECHNICAL LABORATORY 



A total of 218 objects was examined by various methods, including 

 microscopic and microchemical examination, and examination in ul- 

 traviolet light. Of the 85 Freer objects examined, 47 -svere bronze ob- 

 jects analysed by wet chemical methods, and 28 were objects of stone, 

 bronze, silver, and other metalwork and pottery which were cleaned 

 and/or repaired. Forty-two objects being considered for purchase 

 were examined. Ninety-one objects were examined for other divisions 

 of the Smithsonian, other museums, and private owners. Two of these 

 Avere repaired, and 10 written reports were made. Forty-seven of 

 these objects were coins belonging to the Dumbarton Oaks Research 

 Library and Collection, of which the specific gravity was determined. 

 In addition, 22 bronze standards were analyzed by wet methods; and 

 75 identifications were made by X-ray diffraction. Twenty inquiries 

 were ansrv^ered by letter, and niunerous inquiries by telephone. 



Analysis by wet chemical methods of Chinese bronzes in the Freer 

 collection was continued. Further systematic collection of data on 

 the technology of ancient copper and bronze in the Far East was 

 undertaken. Much of the information gained will be presented in 

 a forthcoming catalog on Ancient Chinese Bronze Ceremonial Vessels 

 in the Freer Gallery of Art. Continued studies on the corrosion 

 products of ancient metal objects were made. The editing of IIG 

 Abstracts^ published by the International Institute of Conservation 

 of Historic and Artistic Works, London, continued to be carried on 

 in the Teclinical Laboratory. 



LECTURES BY STAFF MEMBERS 



By invitation, the following lectures were given outside the Galleiy 

 by staff members (illustrated unless otherwise noted) : 



196S 



June 25-August 25 W. B. Trousdale gave a series of 16 lectures on Chinese 



Art History, for the Second Summer Institute in Chi- 

 nese Civilization, vinder the auspices of the United 

 States Education Foundation in China, Taichung, Tai- 

 wan, Average attendance, 29; total attendance, 464. 



July 12 Mr. Trousdale, at the China Society, Taichung Branch, 



Tunghai University, Taiwan, "Archaic Chinese Jade." 

 Attendance, 50. 



July 22 Dr. Richard Ettinghausen, at Georgetown University 



(Peace Cori)s Training Program), Washington, D.C., 

 "Turkish Art." Attendance. 100. 



July 22 R. J. Gettens, at the meeting of the ICOM Committee for 



Scientific Museum Laboratories held in Leningrad, 

 U.S.S.R., read a paper on '"Mineral Alteration Products 

 on Ancient Metal Objects." Attecdance, 75. 



