TABLE OF CONTENTS 
Introduction 1 
The Bailey Collection: 1857-19^1 2 
The Bailey Collection: 19^1-present 10 
Register of Microscopic Slide Collection l6 
Register of Diatom Exsiccati Collection 103 
Register of Collection of Unmounted Materials ll6 
Taxa Index 120 
Geographical Index iko 
Persons Index 151 
Note 15k 
Literature Cited 
155 
