NEW YORK 423 



894. Avalanche lake, Adirondacks (No. 1055). 



895. Hudson river, looking northward from AVest Point (No. 1311). 



896. Hudson river, looking southward past Poughkeepsie (No. 1315). 



897. Hudson river, looking northward from Fort Putnam (No. 1307). 



Photographed by E. L. Edgerly, New York, New York 



4 by 5 inches 



898. Drift boulder, Bronx park, New York city. 



899. Drift boulder, Bronx park, New York city. 



900. Drift boulder, Bronx park, New York city. 



901. Glaciated surface, Bronx park, New York city. 



Photographed by J. F. Kemp, Columbia University, New York, New York 



5 by 7 inches 



902. Glacial furrows, Bronx park, New York city. The furrows are not far from 



the rocking stone, but they have no connection with it. They strike in 

 a northwesterly direction across the foliation of the gneisses. 



903. Rocking stone in Bronx park, New York city. By timing the effort to the 



period of the stone a man can make the top of the stone describe an arc 

 of about 3 inches. 



Photographed by E. L. Ferguson 

 6J by S% inches 



904. Perched rock in Westchester county, New York, near Mount Kisco. 



Photographed by J. F. Kemp, Columbia University, New York 

 5 by 7 inches. 



905. Boulder clay, new site of Columbia University, New York. 



Photographed by J. K. Killers 

 11 by 14 inches. Negatives in United States Geological Survey 



906. The rapids above Niagara falls, seen from the Canadian side (No. 71). 



907. The rapids and Canadian falls of Niagara, seen from Goat island (No. 68). 



908. Niagara falls, from the American side (No. 73). 



909. The American portion of Niagara falls, from Goat island (No. 74). 



910. The American portion of Niagara falls, from the Canadian side (No. 75). 



911. The American portion of Niagara falls, from the Canadian side (No. 63). 



North Carolina 



Photographed by I. C. Russell 



8 by 10 inches. Negatives in United States Geological Survey 



912. Fault in sandstone and shale of the Newark system, Bogan cut, near Wades- 



borough, North Carolina. Hade toward the west (No. 173). 



913. Decomposed trap rock in Newark system at Wadesborough (No. 176). 



