Raymond : Thk Chazy Formation and its Fauna. 57*) 



or contain views opposed to the theories i)Ut forward in the preced- 

 ing pages, (juotations or abstracts are made. Some ])apers are included 

 in the list which are of historical interest only, while several papers, 

 in which other formations have been incorrectly correlated with the 

 Chazy, are intentionally omitted. 



1770. Kai.m, Pktf.k. a Journey to Xortli .\merica. Translated by John Rein- 

 hold Forster. 



The first naturalist who wrote about the region of the typical Chazy 

 deposits appears to have been Professor Peter Kalm of the University of 

 Abo, in Swedish Finland. He passed through the Champlain Valley in 

 1749 on his way to Montreal. He wrote a considerable account of the 

 geology of Crown Point, which has already been quoted by the present 

 writer in Bulletin of American Paleontology, no. 14, 1902. Of the geology 

 of the region north of Crown Point he .says little. 



1817. McClure, Wm. Transactions of the American Philosophical Society, New 



Series, No. I, 1S17, p. 38. Observations on the Geology of the United 

 States. 



The geology of the Lake Chani]ilain region is described briefly as follows : 

 " Secondary class : This extensive formation occupies a surface from two 

 hundred to five hundred miles in breadth. The horizontal limestone and 

 slate skirt Lake Champlain about Ticonderoga and Crown Point, and for a 

 considerable distance down the east side of the lake, seldom extending 

 above half a mile from the edge of the water ; containing some shells and 

 flints, as on Lake Erie, and appears to be the same formation as on Lake 

 Erie. 



"Vermont lays to the westward of the New England States, and occu- 

 pies part of that range of mountains, running north and south in the direc- 

 tion of the stratification, nearly twenty or thirty miles from Lake Champlain 

 and parallel to it. 'I'wo classes of rock occupy the whole state; the transi- 

 tion, which extends along Lake Champlain and is about twenty-five miles 

 broad, where the primitive begins and continues until it joins the frontiers 

 of New England.'' 



1818. Le Sueur, C. A. Journal of the Academy of Natural Science, Philadelphia, 



Vol. I, p. 312. Describes and figures Maclnrites inagniis from the lime- 

 stones of the Lake Champlain region. 



1S41. Emmons, Ebenezer. Final Report on the Ceology of the Second District, 

 New York, p. 107. 



As this is the earliest mention of the name Chazy Limestone, a large part 

 of the original description is quoted. 



" To the calciferous sand rock succeeds the Chazy limestone. .As a whole, 

 it is a dark, irregular, thick-bedded limestone. At Chazy it contains many 

 rough, irregular, flinty or cherty masses which have been found in places 

 once occupied by a species of stone coral. It appears to have been a Cohim- 



