i62 The American Geologist. Marcii, luoo 
were not saved between these depths, so that it is impossible 
to determine the thickness of the Utica shale with any greater 
degree of accuracy. 
The formations penetrated in the Auburn well do not vary 
decidedly in tiiickness from that reported from other wells in 
central New York. The mouth of the Auburn well is near 
the top of the Salina so that most of the 1,055 ^^^^ before 
reaching the Niagara limestone is in that formation. In the 
Seneca Falls well, 12^ miles W. S. W. of Auburn, which be- 
gan near the top of the Salina, 950 feet of this formation \^■as 
penetrated before reaching the Niagara,* and in the Ithaca well 
36 miles south of Auburn, 1,285 ^^^^ without reaching the bot- 
tom! of the formation. In the Clyde well, 17^ miles N. W. 
of Auburn, the Niagara limestone is 325 feet thick and the 
Clinton 83 feett as compared with 325 feet and 125 feet in the 
Auburn well. In the Seneca Frlls well the Niagara and Clin- 
ton together have a thickness of 400 feet ; in the State well 
near Syracuse, 223^ miles E. N. E. of Auburn, the Niagara is 
332 feet and the Clinton 98 feet§ and in the Talmage well, near 
Baldwinsville, 20 miles N. E. of Auburn, the Niagara is 334 
feet and the Clinton perhaps 140 feet. The Medina in the 
Auburn well is perhaps 1,055 ^^^^ thick; in the Clyde well 942 
feet ; in the State well, near Syracuse, 807 feet ; in the Wolcott 
well, 22^ miles N. N. W. of Auburn, 690 feet and in the Tal- 
mage well, near Baldwinsville, 705 feet. The Oswego sand- 
stone is perhaps 210 feet in the Auburn well ; 185 feet in the 
Fulton well, ^yYi. miles N. N. E. of Auburn ; || perhaps 340 
feet in the Talmage well, near Baldwinsville, and from 210 to 
380 feet in the Wolcott well. The Hudson and Utica shales 
are at least 557 feet thick in the Auburn well ; 650 feet in the 
Wolcott well : at least 585 feet in the Talmage well, near Bald- 
winsville ; while in the Fulton well there is 695 feet of Hudson 
and 120 feet of Utica shale. 
*Prosser, American Geologist, vol. \'I, 1890, p. 203. 
tibid., p. 202. 
Jlbid., p. 204. 
l5Prosser, Bull. Geol. Soc. Anier., i8q3, p. 102, 
II Ibid., p. ic6. 
