Before I begin the serious discussion of this topic may I make a few explanatory statements? In the first place I realize that the title I have chosen is misleading in that it may convey the impression that we geologists are, or think we are, thoroughly familiar with the strata beneath our feet. As a matter of fact we know little more than the bare outlines of the facts regarding these strata and many years and much labor will be needed for completing their study as thoroughly as must ultimately be done. But I am devoted to brief titles, and I prefer to explain my thesis in the body of my address rather than in its title.
Proceedings of the Iowa Academy of Science
©1932 Iowa Academy of Science, Inc.
Lees, James H.
"The Address of the President - Our Underground Geology,"
Proceedings of the Iowa Academy of Science, 39(1), 33-47.
Available at: https://scholarworks.uni.edu/pias/vol39/iss1/6