LETTER OF TRANSMITTAL 



Smithsonian Institution, Bureau op Ethnology, 



Washington, B. C, July 1, 1S92. 

 Sik: I have the honor to submit my Thirteenth Annual 

 Report as Director of the Bureau of Ethnoh)gy. 



The tirst part consists of an explanation of the organization 

 and operations of the Bureau ; the second part consists of a 

 series of papers, prepared chiefly by assistants, which illustrate 

 the methods and results of the work of the Bureau. 



It is a i)leasure to express appreciation of your unfailing 

 support in tlie work intrusted to me. 



I am, with respect, your obedient servant. 



Director. 



Honorable S. P. Langley, 



Secrrfari/ of the Smithsonian Institution. 



