166 The A) ner lean Geologist. March, 1891 
The discovery of a bed of this character, occupying so low a 
position in the Chemung group, may at first seem somewhat 
strange ; nevertheless similar beds occupying similar positions 
have been met with before. Professor Hall, in discussing the 
"Carboniferous System " of this part of the state, remarks: 
"There is another conglomerate in Chautauqua county, and in 
some places in Alleghany county, which was briefly noticed under 
the Chemung group. This, however, is a thin mass, and wherever 
it has been found in place, is associated with fine-grained compact 
sandstones, and frequentl}* contains the fossils of the Chemung 
group. In the northern part of Chautauqua county, I found 
some loose masses of this conglomerate, containing fossils known 
to belong to the Chemung group, and by this they were chiefly 
identified. The aspect of the rock is also somewhat different ; 
the pebbles smaller, more round, and not of the same white quartz 
which occurs in the higher rock. "* 
The writer also has seen a like formation as far north as the 
village of Cherry Creek, with an altitude above tide of not over 
1100 feet. 
It would indeed be premature to assert that all these exposures 
are but the northern outcroppings of the low-lying Jamestown 
conglomerate ; no assertion of the kind, either pro or con, can be 
made with propriety until the localities so vaguely referred to by 
Hall are more definitely known, f 
In endeavoring to trace this formation southward and ascertain 
its relations to the oil sands of Pennsylvania, one meets with two 
serious difficulties : (1) the number of borings is, for some dis- 
tance, comparatively limited, and (2) the records, if kept at all, 
are generally too inaccurate to be of any particular value. One 
(see PI: v) = elevation of the Panama cong. at "A." Alt. Panama 
conglomerate at Panama, 1671 feet A. T. (p. 181), hence, difference in 
alt. at ■• A"' and Panama = 171 feet. 
171XJ3 (Jamestown being \\ the distance from Panama 
to "A") =96. \1671 ft. + 9(3 ft. = alt. Panama congl. 
at thi' Jamestown well if it were there represented. .17137 feet A. T. 
Alt. Jamestown well conglomerate (see PI. m.) 1105feetA. T. 
Difference 662 ft.Q. E. D. 
*Geology of N. Y., Part IV. 1843, foot-note.p. 286. 
fProf. J. P. Lesley has too hastily correlated the beds mentioned by 
Hall, with -'one of the thin conglomerates outcropping at Warren, 
Pa." 2d Geol. Surv. Pa. I, 1874, p. 108. 
