PUBLICATIONS OF THE UNITED STATES NATIONAL MUSEUM 



The scientific publications of the United States National Museum, which is 

 comprised of the Museum of Natural History and the Museum of History and 

 Technology, include two series. Proceedings of the United States National Museum and 

 United States National Museum Bulletin. 



In these series are published original articles and monographs emanating from 

 the two Museums and dealing with their collections and work. These publica- 

 tions set forth newly acquired facts in the fields of anthropology, biology, geology, 

 history, and technology. Copies of each publication are distributed to libraries 

 and scientific organizations and to specialists and others interested in the various 

 subjects. 



The Proceedings, begun in 1878, are intended for the presentation, in separate 

 form, of shorter papers. These are gathered in volumes, octavo in size, with the 

 publication date of each paper recorded in the table of contents of the volume. 



In the Bulletin series, the first of which was issued in 1875, appear longer, separate 

 publications consisting of monographs (occasionally in several parts) and volumes 

 in which are collected works on related subjects. Bulletins are either octavo or 

 quarto in size, depending on the needs of the presentation. 



Since 1902 papers relating to the botanical collections of the Museum have been 

 published in the Bulletin series under the heading Contributions from the United States 

 National Herbarium. 



This work forms number 248 of the Bulletin series. 



Frank A. Taylor, 

 Director, United States National Museum. 



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