240 Transactions of the Academy of Science of St. Louis 
SELECTED BIBLIOGRAPHY CONTINUED 
Leighton, Morris M., The Pleistocene succession near Alton, Illinois, and 
17 
the age of the mammalian fossil fauna: Jour. Geology, vol. 29, p. 505, 1921 
18. Leverett, Frank, Geological et agent of Missouri and adjacent districts: 
Geol. Soe. America Bull., vol. pp. 91-92, 1923. 
19. Leverett, Frank, Oldest (Nebraskan?) drift in western Illinois and sow uth- 
easterm Missouri in relation to ~~ mri “ety and drainage development: 
Geol. Soe. America Bull., vol. 3 69, 192 
20. Leverett, Frank, Personal communication, March 25, 1936. 
21. Rubey, W. W., Personal communication, March 23, 1936, 
22. Antevs, Ernst, Maps of the ay pag > eae a: (Report of the — 
Committee of the Geological Socie “ America for 1928; Geol. 
America Bull., vol. 40, pp. 631-720, sf 
23. Fenneman, N. M., tae Se ors mineral resources of the St. revees quadrangle, 
Missouri-Illinois: U. S. 1, Survey Bull. 430, p. 46, 19 
24, Shipton, Washubrn D., Personal Communication. 
25. Bridge, Josiah, Sample and label in the cranes rate of the Department of 
Geology and Geography at Washington Univer 
26. Hanley, Franklin B., Sample and label in the oe ont of the Department 
of Geology and Geography at Washington University. 
27. Drushell, J. Andrew, eres in glacial geology in St. Louis and vicinity: 
St. Louis Academy of Science Trans., vol. 20, p. 35, 1911 
28. Leighton, Morris M., The Pleistocene succession near Alton, Hlinois, and 
the age of the mammalian fossil fauna: Jour. Geology, vol. 29, p. 508, 1921. 
29. Kay, Gorge F., Classification and duration of the Pleistocene period: Geol. 
Soe Deets Bull., vol. 42, pp. 425-466, 1931. 
30. Daly, Reginald Aldworth, The ePoe chia world of the ice age, p. 37, Yale 
Dalvie Press, New Haven, 1934 
31. Leverett, Frank, Outline of Pleistocene history of Mississippi valley: Jour. 
po apt vol. 29, pp. 615-626, 1921. 
32. Leighton, Morris M., The Pleistocene succession near Alton, Illinois, and 
the age of the mammalian fossil fauna: Jour. Geology, vol. 29, p. 505, 1921. 
33. Lhe ae Frank, The Illinois ice lobe, U. S. Geol. Survey Mon. 38, plate 
eo 
og 
omg se Edward M., The New Madrid earthquake: Jour. Geology, vol. 13, 
