18 ANNUAL REPORT SMITHSONIAN INSTITUTION, 1926 
February 18, 1926: Our Ancient Seas. Dr. Charles E. Resser, National 
Museum. 
February 25, 1926: Some Aspects of the Development of Printing. Mr. 
R. P. Tolman, National Museum. 
March 4, 1926: Birds from the Rocks. Mr. Charles W. Gilmore, National 
Museum. 
March 11, 1926: Household Pests. Dr. HE. A. Back, Bureau of Entomology. 
March 25, 1926: Some Aspects of Northwest Coast Indian Art. Mr. Herbert 
W. Krieger, National Museum. 
April 1, 1926: Bug versus Bug. Mr. R. A. Cushman, Bureau of Entomology. 
April 8, 1926: Eclipses. Mr. Leon Campbell, Harvard College Observatory 
‘read by Mr. Austin H. Clark). : 
April 15, 1926: Spring Flowers. Dr. Hdgar T. Wherry, Bureau of Chemistry. 
April 22, 1926: What Are the Stars? Prof. Harlow Shapley, director, 
Harvard College Observatory (read by Mr. Austin H. Clark). 
April 29, 1926: How Fossils got into the Rocks. Dr. Wendell P. Woodring, 
Geological Survey. 
May 6, 1926: Spiders. Mr. Clarence R. Shoemaker, National Museum. 
May 138, 1926: Crabs, Lobsters, and Their Relatives. Dr. Waldo lL. Schmitt, 
National Museum. 
May 20, 1926: Bright Stars and Constellations. Dr. William J. Luyten, 
Harvard College Observatory (read by Mr. Austin H. Clark). 
SMITHSONIAN EXHIBIT AT THE SESQUICENTENNIAL 
Since 1855 the Smithsonian Institution has taken advantage of 
nearly every prominent exposition to be held in this country and 
many abroad to advance, through its carefully planned exhibits, 
the increase and diffusion of knowledge. The Institution has taken 
part in 33 expositions, and in addition to thus reaching millions of 
people through its scientific exhibits, there has resulted the further 
advantage of bringing to the National Museum a large amount of 
exhibition materia] at the close of certain of these expositions. In 
fact, the Museum received its greatest stimulus when it was still in 
the formative stage, as a result of the Centennial Exposition in 
1876, from which over 40 carloads of valuable material were received 
as gifts from foreign governments and other exhibitors. 
With the funds available for the purpose, the Institution has 
endeavored at the Sesquicentennial Exposition in Philadelphia to 
represent in its exhibit as many as possible of the varied scientific 
activities under its direction. In anthropology, biology, geology, 
and arts and industries, the exhibits are taken from the National 
Museum. Anthropology exhibits include nine models in miniature 
of Indian village groups—Iroquois, Sioux, Pawnee, Wichita, 
Chippewa, Seminole, Navaho, and Pujunan. A particularly edu- 
cational exhibit portrays the evolution from simple beginnings to 
modern form of objects of household use, such as the lamp, the cup, 
knife, fork and spoon, the hammer. saw, and drill, and the ax. 
