Chemung and Catshill.— Stevenson. bo 
conglomerate belongs at the base of the Starucca beds but it is 
not present. Even the Lachawaxen is no longer persistent as a 
conglomerate and in some localities it is not even massive. 
The most interesting feature of this section, characterizing 
also those obtained along fragmentary outcrops in Carbon and 
Monroe counties, say 25 miles southeast of that which has been 
followed, is the apparent absence of animal remains from the 
whole series above the lowest member of the section, there being 
no trace aside from what seem to be fragments of fish-bones in 
breccias of the Honesdale sandstones.* Archwopteris jacksont is 
plentiful near the base of the Montrose shales. 
We have followed this section along practically one line of out- 
crop for nearly 600 miles, from the northern boundary of Ten- 
nessee into southeastern New York. Its persistence, stratigraph- 
ically, is remarkable, since variations in structure are inconsider- 
able until within thirty miles of the New York border; but serious 
changes of some sort occurred during the long period of deposit, 
for in the extreme south, even the representative of the Montrose 
sandstone carries Chemung fossils, while in northeastern Pennsy|- 
vania and the immediately adjacent portion of New York, animal 
remains practically disappear above the horizon of the A/legrippus 
conglomerate. 
Let us now return to southern Pennsylvania and follow the 
section westward; but first let us re-label the Fulton county sec- 
tion, giving to its parts the geographical names applied in the 
counties between that and the Delaware river, so that the relations 
of the different parts of the section may be remembered. It be- 
comes 
CATSKILL, 
Cherry Ridge shales 1600' 
Montrose sandstone 2100' 3700! 
CHEMUNG. 
1. Montrose red shales 1000’ 
2. Lackawaxen conglomerate 10’ 
3. Shales and sandstones, including Dela- 
ware flags and Starucca beds 950! 
4, Allegrippus conglomerate 10’ 
5. Shales and flags, including Portage of New 
York 1850’ B820' 
The thickness of the section diminishes rapidly toward the 
west, so that on the western border of Bedford county, near the 
*Mr. C. 5. Proser informs me that he has discovered some lamelli- 
branchs in the Delaware flags and some Sp/iriéfers in the Honesdale 
sandstone, or possibly at the base of the Cherry Ridge shale. 
