New York State Museum. 55 



P. station. It is sinking a well for fresh water which is down 

 now about 250 feet, and if the supply is adequate, will sink, from 

 one to three salt wells. It will use both grainer and pan pro- 

 cesses, and expects to be ready for work about February, 1892. 



At Rock Glen extensive works have been erected since my last 

 report. A record of the first well is given in my former report. 

 The others including the first have the following depths for salt: 



Struck Completed 

 salt. well. 



1 2,015 2,119 



2 2,018 2,033 



3 2,008 2,113 



4 2,068 



2,126 



2,120 



2,145 



Works have also been erected at Perry, N. Y., and are in 

 operation. 



In the Genesee valley no new localities have been developed. 

 The new shaft of the Greigsville Mining Company is the only 

 new feature. 



This company is sinking a shaft for mining salt on the Gray 

 farm on the west side of the D. L. and W. tracks about three- 

 quarters of a mile north of Greigsville station and within half a 

 mile of the Retsof . The shaft is on the site of the old " Well No. 

 4 Gray Farm" on lot 9, town, of York. It is eleven by twenty-two 

 feet and was down about 300 feet at the time of my visit, July 

 27, 1891. Shaft was started October 15, 1890. 



I have also been able to get a complete record of the Retsof 

 salt shaft, which record was incomplete at the date of my last 

 report. 



Complete Record of the Retsof Salt Shaft, Greigsville, N. Y. 

 Record of 784 feet from Wm. S. Potter. Superintendent of 

 Mine. The rest from Mr. S. Gray. ( For the first part see my 

 report on salt, State Geologist's report of 1885, p. 29): 



Feet. 



Shale 133 



Limestone 8 



Shale 232 



