1892.] 



PROSSER THE GENESEE SECTION. 



The mouth of the well must be near the top of the Medina, which 

 outcrops at that locality. At 1200' a slight flow of gas was obtained, 

 which made a flame about ten inches in height from a ^ inch gas pipe. 



Section of the Brockport Well, at Brockport, Monroe Co., 



New York. 



THICK- 

 NESS. 



P - . 3 G' 



1400 

 2000' 



O Q, 



DEPTH. 



500' 

 900' 



950' 



1000' 



Gray and bluish chips, about ^4^ are 

 light gray and slightly calcareous. 

 -- Blue shale and sandstone. 

 — Blue compact limestone. 



Trenton and bottom of well. 



During the winter of 1890-91 a well was drilled at Rochester, 

 about 22 miles northeast of Le Roy. by Messrs. Otis and Gorsline. 

 Samples were saved which have been carefully studied by Professor 

 H. L. Fairchild, who has very kindly furnished me with advance pages 

 of his paper describing this well. {') 



Section of the Rochester Well, at Rochester, Monroe Co., 

 New York, as Reported by Professor H. L. Fairchild. 



ricDTu thick- 

 depth, mess. 



Altitude 506' A. T. 



KIND OF rock. 



Drift. 



250 



1408' 



22S' Niagara and 

 Clinton. 



^ Medina — red 1075' — 



and Oswego or Oneida 8^'. 



1158'. 



(i.) Engelhardt, Rept. Supt. Onondaga Salt Springs for iS88, p. i6, Chart No. III. 



(2.) A Section of the Strata at Rochester, N. V., as shown by a deep boring. Proc. Rochester 

 Academy of Science, Vol. I, pp. 182-1S6. The section of the well is given on pp. 183, 184. 



A duplicate set of samples of the Rochester well was presented to the National Museum by Pro- 

 fessor Fairchild and these specimens have been studied by the writer, who cordially agrees with Pro- 

 fessor Fairchild's interpretation of the record. 



