LIST OF PLATES. 
To face page 
I, Marsh on Diaptomus . . . . . . 18 
II, Hoskins on Bridge Stresses .... 24 
III, Map of portion of town of Bovina ... 73 
Table of Spring Migration of Warblers at Shiocton 88 
IV, Collie on Geology of Conanicut Island . . 199 
Table of Substitution Products . . . 314 
V, Miller on Heart of Cambarus .... 337 
VI, Miller on Heart of Cambarus .... 338 
VII, VIII, IX, X, Birge on Crustacea of Lake Mendota 484 
XI, Accidentally omitted ...... 
XII, Buell on Bowlder Trains; Map of Waterloo 
Quartzite Area ...... 486 
XIII, Buell on Bowlder Trains; Trains of latest Glacial 
Movement ....... 489 
XIV, Buell on Bowlder Trains; southwestward Trains 492 
XV, Buell on Bowlder Trains: Old Southward Trains 496 
XVI, Buell on Bowlder Trains; Westward Trains . 500 
XVII, Lueders on Vegetation of Prairie du Sac . . 510 
XVIII, Smith on Stadia Measurements . . . 540 
XIX, Map of Wisconsin, showing surveys . . . 595 
