Publications of the United States National Museum 



The scientific publications of the United States Na- 

 tional Museum include two series, Proceedings of the 

 United States National Miiseurn and United States 

 National Museum Bulletin. 



In these series are published original articles and 

 monoorraphs dealing with the collections and work of 

 the Museum and setting forth newly acquired facts in 

 the fields of antliropology, biology, geology, history, 

 and technology. Copies of eacli publication are dis- 

 tributed to libraries and scientific organizations and to 

 si^ecialists and others interested in the various subjects. 



The Proceedings, begun in 1878, are intended for the 

 publication, in .separate form, of shorter papers. These 

 are gathered in volumes, octavo in size, with the publi- 



cation date of each paper recorded in the table of con- 

 tents of tlie volume. 



In the Bulletin series, the first of which was issued in 

 1875, a;ppear longer, separate publications consisting of 

 monographs (occasionally in several parts) and vol- 

 umes 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 re- 

 lating to the botanical collections of the Museum have 

 been published in the Bulletin series under the head- 

 ing Conti^ibxdions from the United States National 

 Herbarium. 



This work forms number 297 of the Bulletin series. 



Frank A. Taylor 

 Director, United States National Museum 



U.S. GOVERNMENT PRINTING OFFICE 

 WASHINGTON : 19 70 



For sale b.v the Superintendent of Documents, U.S. Government Printing Office 

 Washington. D.C. 20402 - Price .$(j.7.'i per set of 2 volumes, sold in sets only 



