GEOLOGY OF HAMILTON, WARREN AND WASHINGTON COUNTIES 15T ' 



lake, which latter is a popular summer resort, but aside from this 

 the town is practically a wilderness. The geologic exploration 

 is still quite fragmentary, but, adding to last year's report the 

 observations of 1898, a general idea may be formed of its leading 

 features. The present notes are chiefly based on a trip from 

 Lewey lake through Indian lake, with detours inlo the mountains- 

 lying on each side. 



Series 1. Gneisses make up almost the entire area. Last sea- 

 son's work showed that a quartz-hornblende variety was the 

 chief one in the northern part of the area. The 1898 work has 

 brought to light in specimens 160 and 161 gneisses like 150 of 

 Lake Pleasant. They have the mineralogic composition of 

 pyroxene-granite. They are strongly foliated and present glisten- 

 ing cleavage faces on the feldspars that are characteristic of this 

 variety of rock. 



A strike in each of these cases was noted, bearing to the north- 

 west, which is impressive because it crosses the trend of the 

 ranges. The dip was low to the south. 



Series 2. A small area of crystalline limestones and associated 

 rocks was noted in last year's report from the eastern town line r 

 on the North creek road. 



Series 3, 4 and 5. No gabbros, anorthosites, paleozoics or trap 

 dikes have as yet been discovered. 



Series 6. The glacial deposits surround Indian lake and are 

 present in the valleys and on the broader or lower hills. The 

 higher summits are, however, quite bare. Glacial striae noted in 

 1897 near Blue mountain lake bear a little east of north and are 

 therefore more northerly than those of Lake Pleasant and Wells. 



Warren county 



Johnsburg 



Topography. Johnsburg is the largest township of Warren 

 county and lies in its extreme northwestern corner. Over the 

 greater part of the area the township is very sparsely settled, the 

 farms occurring chiefly along or near the Hudson river, or on the 

 highway which runs across the southwestern corner to Wells 

 in Hamilton county, and which passes through the hamlets of 



