Publications of the United States 

 National Museum 



The scholarly puljlications of the United States National Museum include two 

 series, Proceedings of the I'tulerl States .Xational MiLseum and United States Aatwnal Museum 

 Bulletin. 



In these series are puhlished original articles and monographs dealing with the 

 collections and work of the Museum and setting 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 difl^erent subjects. 



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

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

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



In the Bulletin scries, the first of which was issued in 1875, appear longer, sepa- 

 rate publications consisting of monographs (occasionally in se\-eral 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 Aational Herbarium. 



The present collection of Contributions from the Museum of Histor\- and Tech- 

 nology, Papers 19-30, comprises Bulletin 228. 



Fr.^nk a. Ta\lor 

 Director, United States .National .Museum 



IV 



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