


























transported by streams. 
The final verification of this hypothesis must rest upon much more 
careful and detailed work then is possible in this preliminary survey. 
The Illinois work, however, seems to substan 
tiate the following conclu- 
sions: 
fa 
4 
(1) Pheasant plants have uniformly failed in the driftless area of 
extreme southern Illinois (see Map G). 
(2) They have failed throughout the Mississippi bottoms and the 1 
Kp 
er Illinois bottoms except possibly at Lima Lake in Adams CORT EN sey sta 
Lake in Henderson County, near Galena in Jo Daviess County and at Rock 
Island. There are many pheasants néar Rock Island but it is understood 
that the stocking has.beén so, heavy that the @ase is not conclusive. 
(3) The loess.types show same cledr.failurés some clear successes, 
ajd some cases of.persistence without aggression.The suecesses,so far as 
I. was able to investigate,are mostly on stream bottoms or near projecting 
moraines where drift material would be expected. 
(4) The data for the .0l1d Drift Prairie is unconclusive save for San- 
gamon and Macoupin counties,where: there is an undoubted establishment 
along streams. 
(5) On the New Drift Prairie.the. species is a success wherever cover 
permits,and the adherence of suecesses..to the vicinity of moraines is 
very suggestive.These:.locations were all finally mapped before being 
canpared with the location of moraines: 
(6), The Lake region,which is the only drift type with strong glacial 
expression,is clearly a success.Accozrding tothis evidence it would ap- 
5 
pear that the glacial rule holds in Illinois but should be subjected to 

urther and much more careful tests before final acceptance is justified. 
