92 TWENTY-FIRST REPORT. 



sufficient to find discbarge southward into Lake Chicago, which stood at a 

 height of about 60 feet above the level of Lake Michigan, or 640 feet above sea 

 level. With the recession of the ice from this morainic system the Kala- 

 mazoo River drained directly into Lake Chicago. 



The paper took up a description of the moraines and other glacial features 

 which have been referred to in this abstract, and brought out by means of 

 maps the relation of the moraines to the ponded waters. 



