11 
the Farlow Herbarium unless I have indicated otherwise. Slides placed 
in this collection have been verified as being Bailey’s based on their 
having l) serial numbers between 567 and 2,l85 9 2) descriptions consistent 
with those of similarly numbered entries in the Catalogue of the Bailey 
Microscopical Collection , 3) notations in Bailey’s handwriting scratched 
on the slide, k) notations in Bailey’s handwriting on papers associated 
directly with them, and 5) a system of standard reference lines, orientation 
arrows or numbers characteristic of Bailey’s "Universal Indicator" method 
of locating individual specimens (Bailey, 1855)- Slides falling harmoniously 
into a series ordered on the basis of the preceding, criteria were also 
included. I have marked each slide appropriate to this collection by 
placing on it a round, 0.8 cm diameter, white label bearing the slide 
serial number. The slides have been placed in numerical order in 18 
wooden slide boxes , which were remilled to accomodate the varying 
dimensions of the slides; grossly oversized slides have been housed 
separately in Box #19. 
A paleograph collection has been established incorporating all papers 
bearing notes, numbers or any writing whatsoever that were found associated 
with the slides. The paleographs have been referenced under the serial 
number of the slide with which they were found associated in 1976 unless 
this association was clearly in error. 
The serial list in this work describing the slide collection is 
arranged in groups of slides, partially of Bailey’s design as reflected 
in the Catalogue and partially my own, and it includes all slide serial 
numbers between 567 and 2,185 eventhough some groups do not contain 
diatom material. This list records all information available on the 
slide and in the Catalogue and paleographs, except taxa determinations 
which have been separately indexed. The current existence at the Farlow 
