Publications ol tlic United States National Museum 



Tlie scientific publications of the United Stales Na- 

 tional Museum include two serie,s, Proceedings of the 

 United States National Museum, and United States 

 National Mimeum Bulletin. 



In these series are published original articles and 

 monographs dealing witli the collections and woi-k ol 

 the Museum and setting forlli newly actpiired I'acts in 

 the fields of anthropology, biology, geology, history, 

 and tecluiolog\'. Copies of each publication are dis- 

 tributed to libraries and scientific organizations and to 

 specialists and others interested in tlie various subjects. 



The Proceedings, begun in IST.S, are intended for the 

 publication, in separate fomi, of shorter papers. These 

 are gathered in volumes, octavo in size, witli the imbli- 



cation dale of each [)aper recorded in the table of con- 

 tents of the \-olume. 



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

 1875, appear longer, separate i)ul)lications consisting of 

 monographs (occasionally in several parts) and vol- 

 umes in which are collected works on related subjects. 

 liullt'tins are either octavo or quarto in size, depending 

 on the needs of I lie present at ion. Since 1002, papers re- 

 lating to the Iwtanical collections of the Museum have 

 been published in the Bulletin series under the head- 

 ing Contributions from, the United States Aation(d 

 lleilxu'iinih. 



This work forms number Sfi;! of the BuJlrfin series. 



Fraxk a. Tavi,(i1! 

 Director. United State^s National Museum 



U.S. GOVEKNMK.NT riU.NTl.NC OFFICE 

 W.VSIIINGTOX : lOOS 



For .sale liy the Superintendent of Documents, U.S. Govornmont Printing Office 

 Wa.shington, D.C. 20402 - Price §1 (paper cover) 



