150 Screntifie Intelligence. 
south sof Pittston and of the buried valley. The west-south- 
westward or east-northeastward course is continued eastward 
by the Lackawanna River, and along this stream the buried 
valley extends for some distance, a boring two miles north of 
Pittston reaching the bed rock at a depth of 80 feet. This 
nape lead to enquiry for the continuation of the old water- 
way. Professor White’s views on the point (referred to on page 
27), are not given in the Report. He has sent a statement of 
them to the writer, and from that we learn that he rejects the 
idea of a northward discharge, which Mr. Carl] suggested for the 
Alleghany and Beaver Rivers in pre-Glacial times) on account 
of the topographical difficulties; that he regards it as most_prob- 
able that the old channel was excavated by the river in pre-Glacial 
times, when the land to the north was at a higher level than now; 
that the filling with sands and gravel took place during the era 
of subsidence following the Glacial, the era of floods and deposr 
tion; and that after this, in the elevation which followed bringing 
the land to its present level, the amount of elevation experienced 
by the different regions to the north and south was unequal. 
The rocks of the region range from the Medina sandstone on 
the Salina formation in its New Yor position between the 
Niagara and Lower Helderberg groups, but without its salt or 
gypsum. . 
Some of the most important facts in the Report relate to the 
wide range of fossils of well-known limited positions in the 
Devonian and Upper Silurian of New York. The Spirifere, S. 
disjuncta, S. mesocostalis and S. mesostrialis, as determined by 
Mr. Claypole for Professor White, instead of marking definite 
in New Y 
ing whi 
Catskill and Chemung, and are called the pen te res beds. — : 
ra - ¥y . ra ‘oa 
Again Chonetes setigerus, a Hamilton species in or 
© 
4 
seen in the Chemung, is reported as found 2000 feet above the o 
top of the Hamilton, along with the first two of the above Spit 
fere. Halysites catenvlatus is reported as very abundant ™ the 
Lower Helderberg, in a bed underneath the Stormville limestone - 
of the Lower Helderberg group, while, according to Hall (98 
- 
group, as in New York, occur 1D alter- 
