I60 NEW YORK STATE MUSEUM 



east and west. The gas is distributed by two companies, the New 

 York Central Gas Co., with pipes running to Batavia, Attica, Corfu, 

 and other towns in that vicinity, and the PaviHon Natural Gas Co., 

 which supplies Mumford, Caledonia, Le Roy, Pavilion, Warsaw, 

 Perry, Mount Morris, Moscow and smaller places along the route. 

 New lines are being laid by the latter company to Linwood, York, 

 Greigsville, Retsof, Piffard, Cuylerville, Geneseo and Avon. The 

 trunk lines convey the gas under pressure of from 60 to 125 pounds ; 

 reducing stations at the distributing points lower the pressure to 

 the normal required for consumption. 



The gas is dry, nearly pure marsh gas with less than 8 per cent 

 of other ingredients. The pressure in the original wells was 500 

 pounds a square inch and has shown little diminution. Along the 

 eastern boundary of the field and near Linwood, wells of from five 

 to seven million cubic feet daily capacity have been drilled. 



The field lies along the outcrop of the Genesee shale which is at 

 an elevation of about 900 feet above tide. The gas flow is found at 

 intervals in the last 30 feet of the Medina sandstone. The succession 

 of strata explored by the wells conforms to the normal order as 

 given in the reports of the New York State Museum, but in the 

 western boundary of the field and near Lindon the Niagara is 

 disturbed so as to make the drilling of straight holes a difficult work. 

 Below such disturbances the Medina gives a very limited flow, and 

 consequently exploration in these places has been discontinued. The 

 Niagara averages about 228 feet thick and black water (sulphurous 

 water from cavities in the dolomite) occurs at about the middle. 

 Below the Niagara comes the Clinton with a thickness up to 15 feet 

 (Wolcott limestone?) and at this point anchor packers are usually 

 placed. The Medina sandstone is a little over 100 feet thick; on 

 the northern and southern borders of the field it gives a limited 

 flow of gas, the largest wells being on the eastern border and around 

 Linwood. 



A typical section in the Pavilion field is here given : 



Top of flint 475 fest 



Bottom of flint 625 



Top of salt I 072 



Top of Niagara i 300 



Black water i 415 



Bottom of Niagara i 500 



Top of Medina i 678 



First gas i 743 



Second gas _ i 753 



Third gas "" i 774 



Bottom of Medina i 775 



Hole bottomed I 875 



