6 
In accounting for the second part of the bequest, Durkee reported 
that among the approximately 4,500 algae or seaweeds contained in 15 
portfolios that ?f The Diatomaceae are in one volume and amount to 425." 
Finally, the geographical locations from which samples in the "boxes, 
paper, vials," etc. in the third part of the bequest were derived 
imply that they contained diatoms. In summary, the bequest included 
diatom materials in the partially defined microscopic slide collection, 
in a clearly segregated portion of the algal collection, and in the 
poorly defined "rough material for microscopic research." 
The Society produced in i860 a Catalogue of the Unmounted Materials 
[of the] Bailey Collection ... , presumably describing materials in the 
third part of the bequest. It itemized the collection notes of 705 bottles 
of materials containing primarily infusoria, but the proportion of the 
"rough material" that these represent is unknown. 
In the Annual Report of 1877 the contents of the "Microscopical 
Collection" were given as 1,838 slides "presented in the bequest of 
Professor Bailey" (Proc. Boston Soc. nat. Hist* 19:188-189. 1877-)• 
However, this report additionally indicated that 
All the slides of the Bailey Collection, which 
contained several species of Foraminiferae or 
Diatomaceae, and which had been identified by 
Prof. Bailey himself, are entered in a separate 
book, entitled "The Catalogue of the Bailey 
Microscopical Slides." These slides are registered 
under the same numbers as in the current catalogue, 
but instead of only one line devoted to a general 
description and name of the locality, the space 
of half a page or more is devoted to the list 
of the species found upon that particular slide, 
together with the marks and measurements for 
finding each specimen. Prof. Bailey had begun 
this catalogue by registering 793 slides in 
this manner on foolscap paper, and this was 
continued by Miss Washburn. 1391 slides were 
entered in a similar manner by this lady upon 
/ 
