198 



NINETEENTH REPORT. 



Lake Michigan. The only settlements are two summer colonies on 

 Crystal Lake with scattered cottages and farm houses along the state 

 road to the northeast, and a small group of houses around the lighthouse 

 and the coast guard station at Point Betsie. 



Figure 10. Geology of Crystal Lake Bar Region. 



B. Geology. (Fig. 10.) 1. Glacial deposits. The dominant features 

 of the relief of the region are two glacial ridges extending from the 

 shore of Lake Michigan to the southeast. They are characterized by 

 gentle slopes and a nearly level sky line, with the exception of two 



