48 ANNUAL REPORT SMITHSONIAN INSTITUTION, 1926 
Smithsonian exhibit at the Sesquicentennial Exposition in Philadel- 
phia. The anthropological exhibits include miniature models of 
Indian village groups, life-size models of Indian potters, silver- 
smiths, and weavers at work, and a series to illustrate the evolution 
of the lamp, cup, knife, fork, spoon, hammer, saw, drill, and ax. 
The chief exhibit in biology is a mounted group of the Bighorn, or 
Rocky Mountain sheep. Geology is represented by a series illustrat- 
ing the weathering of rock to form soil, a collection of gems and 
precious stones found in America with the minerals in which they 
occur, and a number of interesting fossil forms including fossil fish, 
turtles, plants, and algae. The Museum’s historical exhibit com- 
prises a series of arms, insignia, uniforms, and medals, and models 
of Columbus’ ships, of the Mayflower, and of the Constitution. 
Mechanical technology is represented by an extensive exhibit illus- 
trating the development of the steam engine and of the steamboat. 
In graphic arts are shown examples illustrating the progress in 
photography from the days of the daguerreotype to the present, and 
other forms of graphic expression. The entire Smithsonian ex- 
hibit was prepared and installed in Philadelphia under the direction 
of Mr. W. de C. Ravenel, administrative assistant to the Secretary. 
MISCELLANEOUS 
Visitors to the buildings under the National Museum show a 
steady annual increase, in the present year registering a total of 
1,106,305. The attendance in the several buildings was recorded as 
follows: Smithsonian, 110,975; Arts and Industries, 355,762; Natural 
History, 581,563; Aircraft, 58,005. The average daily attendance, 
including Sunday, was approximately 2,500. The exhibition halls 
were closed on Christmas Day and New Year’s. 
The Museum published 8 volumes and 49 separate papers during 
the year, while its distribution of literature amounted to 96,804 copies 
of its books and pamphlets. 
Additions to the Museum library have included 1,660 volumes and 
1,466 pamphlets, obtained mainly by exchange or donation. In the 
considerable progress made in library matters during the year, men- 
tion may be made of binding and of the checking of sets of periodi- 
cals and of the attempt to fill existing gaps in these series. 
Dr. Casey A. Wood, well known as an ornithologist, was given 
honorary appointment as collaborator in the division of birds on 
January 9, 1926. Doctor Wood has shown deep interest in the col- 
iections of that division for a number of years. 
Dr. H. H. Bartlett, director of the botanical garden of the Uni- 
versity of Michigan, who will collect specimens in Formosa and 
Sumatra on behalf of the National Museum and the University of 
