FOREST LAKE. G 5 . 119 



on the land of Mr. G. Dewel ; the stratum is 20' thick and 

 quite massive ; base 1140' A. T. 



At Birchardsville, a massive sandstone, seen making a 

 cliff in the hills at 1375' A. T., belongs in the New Milford 

 group, and probably comes near its middle. 



At the folks of the road near W. Reinvault's, in the south- 

 east corner of the township, the Montrose sandstone group 

 is seen commencing at 1665' A. T., and extending with many 

 bold cliff outcrops up to 1765'. 



Barometric elevations in Forest Lake. 



A. T. 



Forks near G. Dewel's, 1100' 



N.Miller's, 1100' 



Cross roads in Birchardsvlile, 1130' 



Forks near J. B. Fessenden's, 1170' 



" W. C. Tilden's, 1200' 



" School House No. 9, 1240' 



H. Baldwin's, 1340' 



" next east, 1500' 



« " 1715' 



" Mr. Meeker's at Forest Lake P. O., 1560' 



" C. Loomis's, . 1475' 



" J. Green's, 1445' 



" W. Rheinvault's, 1735' 



" H. L. Ball's, 1740' 



Level of Forest Lake 1560' 



15. Middletown, in Susquehanna county. 



This lies directly west from Forest Lake, and extends to 

 the Bradford county line for its western boundary. 



All of the drainage passes south into the Wyalusing thus 

 finally reaching the Susquehanna river. 



The rocks of this area belong mostly to the CatsJcilh 

 though in some of the valleys the top of the Chemung is 

 just reached, or ought to be, since at some localities they 

 are trenched 200' below the base of the New Milford Lower 

 sandstone. 



A large quantity of Drift is scattered over the surface, 

 and in it are seen some small bowlders of granite and other 

 crystalline rocks. 



Oil boring. — Near the center of the township, at Mr. J. 



