30 REPORT OF NATIONAL MUSEUM, 1922. 



PHOTOGRAPHIC LABORATORY. 



In illustrating Museum objects for reproduction in publications 

 and for record purposes and in copying plans, diagrams, etc., re- 

 quired in connection with the work of the Museum, there were made 

 in the photographic laboratory during the year 1,621 negatives, 9,617 

 black and white prints, 171 cirkut prints, 96 bromide prints, 48 blue 

 prints, 60 fifteen-inch panorams, 238 lantern slides, 24 transparencies, 

 besides developing 914 field negatives and mounting 71 bromides. 

 The increasing demand for lantern slides will require the fitting of 

 a special dark room for that work. 



MEETINGS, CONGRESSES, AND RECEPTIONS. 



With limited finances the Museum is unable to inaugurate regular 

 lecture courses, but all governmental agencies and all scientific and 

 educational societies have the free use of its auditorium and the 

 adjacent council rooms for congresses, lectures, and the like. Dur- 

 ing the year about 150 meetings were held, the lectures and discus- 

 sions covering a wide range of subjects. 



In response to the desire in a simple but dignified manner to 

 acknowledge the debt of our country to the poet, the sixth cen- 

 tenary of the death of Dante Alighieri was observed by a meeting 

 in the Museum auditorium on October 3, 1921, presided over by 

 Hon. Charles E. Hughes, Secretary of State. President Harding, 

 being unable to attend, sent a letter which was read. Addresses on 

 the significance of the great Florentine were delivered by Signor 

 Guido Sabetta, counselor of the Italian Embassy, and by Prof. 

 Charles H. Grandgent, of Harvard University. 



Other governmental activities in the auditorium or council rooms 

 included, under the auspices of the Minister of Cuba, an address on 

 that country by Signor Cayetano Quesada, with motion pictures, 

 before diplomatic representatives of Central and South America; 

 under the Department of Agriculture, two sessions of the important 

 National Agricultural Conference called by the President of the 

 United States, a two-day plant quarantine conference arranged by 

 the Federal Horticultural Board, a three-day conference between 

 the United States Forest Service and State forestry omcals, three 

 meetings of the employees of the Forest Service, four lectures on 

 economics arranged by the Bureau of Markets and Crop Estimates, 

 and a gathering of the scientific staff of the whole department; 

 under the United States War Department, the graduation exer- 

 cises of the United States Army Medical School for the year 1921-22; 

 under the United States Treasury Department, Public Health Serv- 

 ice, two meetings of the Women's Social Hygiene Council and two 

 other gatherings to view motion pictures; under the United States 



