LETTER OF TRA?(SMITTAL 



Smithsonian Institution, 

 Bureau op American Ethnology, 



Washington, I). C, July 1, 1899. 

 Sir: I have the honor to submit my Twentieth Annual 

 Report as Director of the Bureaii of American Ethnology. 



The preliminary portion comprises an account of the opera- 

 tions of the Bureau during- the fiscal year, and the further 

 development of a classification of ethnic science that has 

 grown out of the Bureau's work in the last two decades; the 

 remainder consists of a memoir on the native pottery of the 

 eastern United States, which embodies briefly the results of 

 many years' archeologic exploration by the Bureau, supple- 

 mented by study of all the important collections of aboriginal 

 American pottery in the United States. 



Allow me to express my appreciation of your constant aid 

 and your support in the work under my charge. 

 I am, with respect, your obedient servant,^ 



Director. 



Honorable S. P. Langley, 



Secretary of the Smithsonian Institution. 



