lo Bulletin 14 276 



He mentions also the occurrence here of the Birdseye and 

 Trenton and the great number of specimens of Linoula crassa 

 Hall in the latter. 



In 1891 President Ezra Brainerd* published a carefully 

 measured sedlion of the Chazy, which is as follows, the strata 

 being given in ascending order: 



A I. Sandstone and slate interstratified - 23 feet 



2. Impure limestone containing Orthis platys 25 feet 



B Beds containing Madurea magna 200 feet 



C I. Dark gray, massive limestone, weathering in 

 darker stripes an inch wide, containing Biicania 



sp. und 40 feet 



2. Tough, siliceous and magnesian rock, passing 



into a two-foot bed of pure sandstone 17 feet 



Aggregate thickness 305 feet 



In a later paperf Professors Brainerd and Seely reprint this 

 se(5lion with a geologic map of Crown Point, Chimney Point and 

 Port Henry. They also mention the occurrence of the higher 

 measures of Calciferous on the east side of the peninsula, the 

 fossils seeming to indicate Group D. The Black River and Tren- 

 ton were recognized by them as being well shown. 



Prof. J. F. Kemp, in his report on the geology of Essex 

 County, N. Y.,| gives a geologic map of Crown Point township, 

 in which he represents the greater portion of the peninsula as 

 underlaid by the Chazy, with the Trenton at the extreme point. 

 He mentions the locality as a good one for studying the older 

 Paleozoics, as all the formations from the Potsdam to the base of 

 the Utica slate are represented. 



*Bull. Geol. Soc. Am., vol. 2, p. 300, 1S91. 

 fBull. Am. Mus. Nat. Hist., vol. 8, p. 305, 1S96. 

 JReport of the State Geologist, 1893. 



