I have long felt that a shortcoming of the first list was the 

 lack of concern with dates of publication. Although most of the 

 Smithsonian series have been fairly reliable about ensuring that 

 the proper year of publication appears on separates, the exact 

 date often is very useful when dealing with the nomenclature of 

 older names, Conseguently , I have expended considerable time and 

 effort in establishing exact dates whenever possible. In some 

 cases this was simple, since many of the recent papers had the 

 dates printed on the separates, but more often than not some 

 digging was necessary. 



It was difficult to establish dates for earlier papers and in 

 some cases it was not possible. The earliest volumes of the 

 Proceedings were published by "signatures" of varying numbers of 

 pages. Often the end of a given signature did not coincide with 

 the end of a paper, so portions of one paper were published on 

 one date and the remainder of the same paper may have appeared 

 several months later. In these cases I have attempted to give 

 inclusive dates for the entire paper, although the annotations 

 for some signatures were very confusing. 



At the back of the table of contents in Proceedings volumes 

 9-11, there is an explanation that the articles were 

 "stereotyped" on the date at the bottom of the signature page but 

 that the actual date of publication for each signature is given 

 in the front of the volume. In these cases both the 

 "stereotyped" date and the later "published" date are given, with 

 the latter assumed to be the correct date of publication. 

 Unfortunately, there is no indication if the same situation 

 obtained with volumes 1-8, and a search of the records in the 

 Smithsonian Archives and Press did not clarify the problem. 

 Consequently, the signature dates are regarded as publication 

 dates for volumes 1-8; it should be emphasized that some doubt 

 exists and that additional data in the future could modify these 

 dates. 



Starting with Volume 12, each article was individually 

 printed and the date of publication was more firmly established. 

 These dates appeared in the Table of Contents for each volume, 

 issued at the end of the year for inclusion in the bound set in 

 the Smithsonian's main library. From Volume 3 2 to Volume 54, 

 dates of publication appeared on the cover of separates from the 

 Proceedings; these dates were verified by cross-checking with the 

 dates in the tables of contents. 



[Footnote, USm Bull. (93):39. Proceedings papers Nos. 1-760 [vol. 1-11] were issued by sigTatures, and v/ien the 

 piblished date for a sigTature differs ftxm the date it was received fran the printer at the Naticnal MuBeun, the latter 

 date has been used here as the actual date of pLblication. After No. 760 each article has its actual date of 

 pLfclicaticn recorded in the ccnpleted vdIuie of Proceedings.] 



