30 REPORT 0E NATIONAL MUSEUM, 1918. 



according to types and chronology by Mr. Gilbert Hinsdale, who 

 studied the objects with a view to securing data for his cata- 

 logue of whaling implements. The four large family groups com- 

 prising the Dyaks of Borneo, the Zulus of South Africa, the Caribs 

 of British Guiana, and the western Eskimo, prepared for the Panama- 

 Pacific Exposition in San Francisco, were reassembled in the hall of 

 ethnology by Mr. W. H. Egberts, under the direction of Dr. William 

 H. Holmes, thus completing the splendid series of ethnic groups de- 

 signed by him. In American archeology the condition of the exhibi- 

 tion as well as the study series was much improved, and many new 

 specimens, as well as selections from the reserve collections, were 

 added to the exhibition series. The collection of Egyptian antiqui- 

 ties and ancient pottery and glassware from the several Mediter- 

 ranean countries was installed in Kensington cases in the north 

 alcove of the hall devoted to Old World archeology, and some minor 

 additions were made to other series of this division. 



In the halls of history in the arts and industries building the 

 changes have not been radical, yet the presentation of the material 

 to the visiting public has been greatly improved. Progress was made 

 in having each case represent a particular historical unit and in 

 arranging these units in logical sequence. 



The installation of the Langley flying machine, elsewhere men- 

 tioned, necessitated the closing of the east hall and the removal of 

 the exhibition cases for about a month. When the hall was reopened 

 some new cases were introduced and the exhibits otherwise re- 

 arranged, adding to its appearance materially. The boat models 

 belonging to the division of mechanical technology, which for a 

 number of years have been on exhibition in the north hall of history, 

 were removed to the boat hall. 



The collections of graphic arts in the Smithsonian building were 

 at the end of the year in better condition than heretofore. The Ben 

 Day Rapid Shading Medium exhibit was entirely rearranged, im- 

 proving its presentation and making it more readily understood by 

 the public; the exhibits of photomechanical relief, both line and 

 halftone, were reinstalled with new material added, and the exhibits 

 of the phototelegraph and akrograph work were also rearranged. 



The work of the preparators of the department, which at all times 

 had the special supervision of the head curator, Dr. Holmes, included 

 the installation of the four family groups returned from the Panama- 

 Pacific Exposition in San Francisco. Much new work in the way of 

 modeling, painting, and repairing was also accomplished, including 

 the modeling of a bust figure for the historical costumes exhibit. 



Toward the close of the year radical changes in the exhibition halls 

 were initiated through requirements of the Treasury Department, it 

 being found necessary to accommodate the Bureau of War Risk In- 



