76 T. G. B. LLOYD NOTES FROM THE STATE OE NEW YORK. 



9. Geological Notes from the State o/New York. 

 By T. G. B. Lloyd, Esq., C.E., F.G.S. (Bead June 23, 1875.) 



[Abstract.] 



The following notes of various geological facts occurring in the 

 northern part of the State of New York were collected during a 

 residence there some five or six years ago. 



Grooves and Channellings, Black Jiiver, Watertown, Jefferson 

 County. 



The grooves and channellings which are seen cutting into the 

 ledge of birdseye limestone at the base of the bank of sand, gravel, 

 and boulders, pass obliquely across the bed of the river. 



Fig. 1. — View of the Pulpit Rock, near Oxbow, Jefferson Co., New 

 York, showing remains of Giant's Kettles in Laurentian Granite. 



Further down stream, beyond the railroad bridge, the channel- 

 lings were discontinued ; but from the south side of the river they 

 continued in a south-west direction to Lake Ontario, a distance of 

 about 10 miles, according to Dr. Emmons. 



Glacial Phenomena of the District around the village of Theresa, 

 Jefferson Co. 



The surfaces of the Potsdam Sandstone and of the Laurentian 

 rocks, between Philadelphia on the south-east and the village of 

 Bedwood on the north-east of Theresa, are grooved and striated in 

 a direction north-east and south-west, corresponding with the longer 



