i6 



2. American Apparatus for the Transmission of Signals- 



AT a Distance avithout Wires. Marconi System. 

 Exhibited by Mr. W. J. Clarke. 



3. Exhibit of new Electrical Apparatus by Prof. M. I. 



Piipin. 



a. Optical Telephone. 



b. Induction Coil with 30" spark. 



c. Electrical Oscillators for Selective Signalling. 



d. Bridge for measuring phase retardation between current 

 and electro-motive force. 



4. Method of Supporting Galvanometers to Avoid Vi- 



brations. Exhibited by Electrical Engineering De- 

 partment, Columbia University. 



5. Exhibit of Recent Electrical Apparatus by Mr. J. G. 



Biddle. 



a. 1898 Type Willyoung Induction Coil. 



b. Willyoung Direct Reading Potentiometer. 



c. The Rowland Electro Dynamometer. 



d. The Rosa Curve Tracer for Alternatino: Current Curves- 



ETHNOLOGY AND ARCHEOLOGY. 



In Charge of Franz Boas and L. Fakrand. 



1. Exhibit of the Jesup North Pacific Expedition. 



a. Facial paintings of Indians of the North Pacific Coast. 

 Collected by F. Boas and L. Farrand. 



b. The Prehistoric Races of southern British Columbia- 

 Collected by Harlan I. Smith. 



c. Conventionalism among the Thompson River Indians. 

 Collected by James Teit. 



2. Symbolism of the Huichol Indians of Mexico. Col- 



lected by Dr. Carl Lumholtz and exhibited by the 

 American Museum of Natural History. 



