TABLE OF CONTENTS 
antroduction 2... * 169 
LD OE aprile lee aL Ee aN ame eo vt 172 
General Statement __. 172 
Theoretiral Considerations 212 ag 173 
Methods of Stud 173 
The Festus Terrace 179 
The Cuivre Terrace .... 186 
The Boeuf Terrace ..... 3 prsssceeesnaneesteeetecancentesneneenemesene 196 
Miscellaneous Terraces in Illinois South of St. Louis -201 
Terrace Summ APY ute, an 
Ce a2 ee ee Stenson neni ba cheep Cone nec verbe aires 202 
General Statement 2 
The Wisconsin Drift =~ 208 
The Illinoian Drift in Tl 208 
The Ilinoian Drift in St. teal and St. Louis County -...... zits 
Pre-Iinoian Drift in’ Tinois 218 
Pre-Ilinoian Drift in Lincoln & St. Charles Counties and Vicinity L220) 
Pre-Ilinoian Drift in St. Louis and North St. Louis County...-...--- 23 
Pleistocene History of the Middle SEER AL ee ORION 2 lee 228 
Pre-Pleistocene Topogrophy and Dra suber 
Grandian Epoch 231 
ttumwas Epoch io. oa gE ch 231 
Centralian Epoch 233 
Uhintin Reoth 2 So en re ee 235 
Pleistocene ey Saiary oo 237 
Biblilography ace 239-240 
LA BLES 
I—Terrace Dat 174-175 
: l—Section of “Cuivre Terrace” on Cuivre River, St. Charles 
County a Short Distance South of the Village of Chain- 
-Rocks, Lincoin County, Missouri. Fig. 9..-.—------ 191 
206-207 
Il1I—Analysis of Drift by Pebble. Coat 2... 
IV—Section of Drift in the Alton Brick Company Shale Pit 
at Edwardsville, Madison County, Illinois. -..209 
V—Section of Drift Partly. Water-Laid, at U. S. Nigkeur 
and. the St. Louis-St. Louis County Boundary... 21 
ViI—Section Exposed on Watkins Creek, a Few pias ed 
ie South of U. S. Highway 66 and About a Mile 
West of: Riverview Drive....__.....—___ 215 
VIE_—Time Scale of the Pleistocene Modified from Estimates 
by George F. Kaye i 229 
VIII—Classification of me Pleistocene er According to Kay 
and Leighton edie 5 
nace erent ene esen 
