PAPERS OX GEOGRAPHY AND GEOLOGY 361 



maps put out by the Survey. Map filling can degenerate 



into mere busy work but it can be made to serve a most 

 important function in college work. We used a large re- 

 lief model of the State and one of the Chicago Area. We 

 also made effective nse of such books as ; "Starved Eock 

 State Park and its Environs" by Sauer, Cady and 

 Cowles. "Geography of the Chicago Area" by Salisbury 

 and Alden, etc. Some railroads furnished us material 

 of value, but literature sent out by Commercial Clubs 

 and other booster organizations is apt to be over en- 

 thusiastic and not always absolutely reliable in the mat- 

 ter of statistics. An attempt was made to use the daily 

 press and other current publications selecting such ma- 

 terial as had geographical value. 



It was understood that at least two quarters of G _ 

 raphy should precede this course, for it is the policy of 

 our institution to have a course in Principles and one in 

 General Eegional Geography precede all oth 



Altho most of our pupils have had no geology save 

 what they have gleaned from Geography courses 1 

 nothing impossible or undesirable in using considerable 

 geological material. Some structural, some economic and 

 even some historical can be introduced and appreciated. 

 We learned to talk fairly intelligently about the LaSalle 

 Anticline and its various types of expression as 

 in the exposures near Dixon and LaSalle and in the oil 

 and gas fields of Crawford. Clark and other counties 

 where it is deeply buried. There are some fine geologi- 

 cal profile maps that help to show these conditions. I see 

 nothing at all impossible about learning the approximate 

 extent of the Xiagaran Formation. Is it too much to ex- 

 pect that a college student may know that three-fifths of 

 the State has a rock formation referred to the Pennsyl- 

 vanian? The well drillers and many farmers know the 

 St. Peter sandstone by name and understand its economic 

 importance. Certainly we can go as far, and I see no 

 reason why we can not theorize a little as to its probable 

 origin. When it comes to understanding conditions in 

 the glaciated areas of the State it is hard to see how much 

 can be done without a fair knowledge of glacial geology. 

 This is true especially of the northeastern part of the 



