452 PROCEEDINGS OF BALTIMORE MEETING. 



961. The Helderberg escarpment south of Indian Ladder, Albany county, New 



York; looking southwest. Slopes of Hudson shale in the foreground. High 

 cliffs of Pentamerus beds of the Helderberg, surmounted by terraces of 

 overlying limestones. Hills of Hamilton group in the background to the 

 right. 



962. The Helderberg escarpment at Indian Ladder, Albany county, New York. 



Slopes of Hudson shale, cliffs of tentaculite, and pentamerus limestones. 

 Looking south. 



963. Part of panorama to the westward of 962, showing the "gulf" at Indian 



Ladder. Published as a plate in report of state geologist of New York for 

 1893. 



964. Pentamerus and tentaculite beds of Helderberg limestone at Indian Ladder, 



Albany county, New York. Published as a plate in report of state geologist 

 of New York for 1893. 



965. Quarry in Helderberg limestones just south of South Bethlehem, Albany 



county, New York. Exhibits tentaculite and pentamerus beds, which are 

 extensively used for road metal. Looking south. Published as a plate in 

 report of state geologist of New York for 1893. 



966. Road metal quarry in pentamerus and tentaculite beds of Helderberg lime- 



stones, at South Bethlehem, Albany county. New York. 



967. Creek falling into limestone cave (pentamerus beds of Helderberg limestone)? 



west; of Coxsackie, New York. Published as a plate in report of state 

 geologist of New York for 1893. 



968. Overturn and fault of Sprayt creek, one mile west of South Bethlehem, Albany 



county, New York. To the left are the Hudson shales, exhibiting an over- 

 turned anticlinal with nearly horizontal axis. They are overlain by thin 

 bedded Helderberg limestones, and at the top are heavier bedded limestones, 

 which are overthrust along a fault plane which is seen in the middle of the 

 right-hand side of the photograph. Published as a plate in report of state 

 geologist of New York for 1893. 



969. Anticlinal in Esopus shales (Cauda galli), Catskill creek, near Leeds, Green 



county, New York. Published as a plate in report of state geologist of New 

 York for 1893. 



970. Northern front of Catskills, and Cairo knob, from near Leeds, New York. 



Catskill creek in the fore and middle ground. 



971. Wittemburg range, southern Catskills, from half a mile east of Shokan station, 



looking west. 



972. Esopus shales, on west bank of Esopus creek, two miles above Saugerties, New 



York. Ledges of Oriskany sandstone are seen along the east bank. Pub- 

 lished as a plate in report of state geolo'^ist of New York for 1893. 



973. Champlain clay lying against Helderberg limestones, west shore of Hudson 



river, near Rondout, New York ; looking north. Published as a plate in 

 report of state geologist of New York for 1893. 



974. Quarry in Becraft limestone, Rondout, New York; looking north. Pub- 



lished as a plate in report of state geologist of New York for 1893. 



975. Cement beds and limestones on Wallkill Valley railroad, one mile south of 



Whiteport, New York. Published as a plate in report of state geologist of 

 New York for 1893. 



