i6o TJie American Geologist. 
57 3-200 Mainly blue argillaceous 
shale; some arenaceous 
chips. Slightly calcare- 
ous. 
58 2,.Z2J Bluish-gray limestone; 
very strong effervescence 
in cold HCl., chips rather 
fine. 
59 3.360 Light gray limestone; chips 
fine. Strong efferves- 
cence in cold HCl. 
60 3.J00 Chips fine; mainly dark to 
bluish-gray, but with 
grains of very light gray 
limestone. Strong effer- 
vescence in cold HCl. 
61 3.550 Blackish argillaceous shale 
with slightly brownish 
streak. Effervesces for 
a short time in cold 
HCl., but there is a large 
clay residue. 
62 3.570 Dark to bluish-gray lime- 
stone; fine chips and 
strong effervescence in 
cold HCl. Bottom of 
well. 
March, 19UI 
Hudson 
Trenton 
Trenton 
Trenton 
Trenton 
Trenton 
In the above section no sample was saved between 1,290 
feet, which is clearly Niagara limestone, rnd 1,380 feet, which 
is green Clinton shale ; btit the top of the Clinton may be above 
1,380 feet, in which case its thickness would be more than 125 
feet and the Niagara less than 325 feet. The rocks from 2,380 
to 2,560 feet, a thicknesss of 180 ft., seem to be transitional 
from the Medina to the Oswego sandstone. If these rocks were 
classed in the Oswego sandstone, then the Medina would have 
a thickness of 875 feet. /\gain in the same way the last 60 
feet classed in the Oswego sandstone seems to be transitional 
to the Hudson formation, and if it be classed with the latter 
then the thickness of the Hudson and Utica shale will be 617 
feet. The Utica shale, apparently, is not thick in this well, for 
the sample from 3,200 feet is Hudson shale, and 127 feet deeper 
is the top of the Trenton limestone. Unfortunately samples 
i 
