LIST OF ILLUSTRATIONS 
Figure Page 
+ Tite May of the American Bottoms... 92 
2. Characteristic Mellow Bluffs Bordering the American Bottoms............-. 94 
3. Resistant Limestone Bluffs at the Northern Terminus of the American Bottoms 94 
4. Resistant Limestone Bluffs at the Southern Terminus of the American Bottoms 94 
5. Types of Farmiog in Ulinoies. oo... 30 cess asec 96 
6. Proportional Classification of Farm ACTOR ono es ELEY wae cee 96 
7. Proportional Classification of Farms by Acreage Range.......-....-..-+++: 98 
8. Combined Acreage of Farms Grouped by Acreage Range...........-+--++-- 98 
9. Proportion of Farmers by Acreage Range of Land Farmed...............-. 98 
10. Proportion of Farms with and without Improvements.............-..-++-- 98 
11. Proportion of Farms with Improvements by Acreage Range............-.-- 99 
12. Classification of Improvements as to Condition..............06.ccccercees 99 
13. Proportion of Land Farmed by Tenants and by Landlords..............--- 99 
14. Land Farmed by Land Owners and Non-Land Owners..........-.2- 20005 99 
15. Proportion of Landlords and Tenants, ...1.....00s0.s0ceececceeeecee ees 101 
16. Proportion of Landlords by Acreage Range........0.+0cecceeeeeeeseeeeres 101 
17. Map of Different Types of Agricultural Economy.......-..+--++++++++050° 104 
18. Drainage Map of the American Bottoms for 1907........2.22+20+00c00008 108 
19, Soil Map of the Farm Lands of the American Bottoms...........--+-++++> 114 
20. Monthly Precipitation for St. Louis (1933)........---- 2s cere eee c creer ees 117 
21. Mean Monthly Temperatures for St. Louis (1933).....-.-.-- cceaceeueree 118 
22. Monthly Precipitation for St. Louis (1934).........2+ceeceeecceeeeeereees 118 
23. Mean Monthly Temperatures for St. Louis (1934)......---++-e0eereeeeeee 119 
24, Small Clearing at the Edge of a Swamp..........:00cescceecscnceenecsers 121 
25. Shelter for Livestock on the Former Floor of a Lake......---+++++00e+205 121 
26. Drainage and Transportation Map..........:.00s+cceeeerr eer eeereecenes 122 
Biss Balint Be oe ete ck Gi, iN gee Seen eee 124 
28. Low Bridge over a Public BigNWAY. 5c oa 8 wr a es ke ee teres te eee 124 
29. Granite CORY Se si ee es eee ee tne eee tte 127 
30. Premature Subdivision of Farm Land..........2++++eerecreeeterretteees 127 
31. Section of the River Levee West of Granite City.......-...++02++0teeereee 131 
$2. New Mouth of Wood River.....2..-.-ccecseeccorceceercepecenernereces 131 
