Raymond : Thk, Chazy Formation and its Fauna. 587 



Devonian, in Canada and the United States. (Quarterly Journal of the Geo- 

 logical Society of London, Vol. 35, p. 351. 



The author describes Priouiodiis radicans, which is said to occur in large 

 numbers in a bed of dark limestone of the Chazy at Grenville, Canada. It 

 is associated with great numbers of tests of Lep rditia. 

 1S79. W.VLCOTT, C. D. New Species of Trilobites from the Chazy and Trenton For- 

 mations. Thirty-tlrst Annual Report New York State Museum, page 68. 



Describes one new trilobite from the Chazy limestone at Chazy, New 

 York. 

 1879. WhitfieI-D, R. p. The Discovery of Specimens of Afaclurea magna, of the 

 Chazy, in the Barnegat Limestone, near Newburgh, New York. American 

 Journal of Science and Arts, third series, Vol. 18, p. 227. 



In a letter to Professor James D. Dana, Professor Whitfield states that he 

 found three specimens of l^Iaclurea magna in a quarry one and three fourth 

 miles southwest of Newburgh ferry. 

 1S81. Marcou, JULts. Sur les Colonies dans les Roches Taconiques des Bords du 

 Lac Champlain. Bulletin of the Geological Society of France, third series. 

 Vol. 9, pp. 18-46. 



In this article the geology of several Vermont towns is described. A 

 brecciated limestone at Highgate Springs, Vermont, yielded Marcou the 

 following Chazy fossils : 



Ampyx halli, Orthoceras, 



L inpih , JMurchisonia. 



Orthis, Coiuntnaria. 



The Chazy limestone in New York is stated to have a thickness of lOO 

 meters, and the limestones are very fossiliferous, especially rich in brachio- 

 pods, JMaclurea, and the remains of crinoids. 



On the map which accompanies the article, the Chazy is represented as 

 covering the southern half of Isle La Motte, and forming a narrow strip run- 

 ning south from Chazy, turning east and reaching the lake four or five miles 

 south of Chazy Landing. 

 18S1. Mn.LER, S. A. Observations on the Unification of Geological Nomenclature, 

 with Special Reference to the Silurian Formation of North America. Journal 

 of the Cincinnati Society of Natural History, Vol. 4, p. 267. 



Gives the distribution of the formation and mentions some of the fossils, 

 iS8i. Whitfield, R. P. Notice of the Geological Investigations along the 

 Eastern Shore of Lake Champlain, Conducted by Professor H. M. Seely and 

 President Ezra Brainerd, of Middlebury College, with Description of New 

 Fossils Found. Bulletin American Museum Natural History, Vol. i, p. 293. 

 In this paper two new Chazy fossils are described. Some remarks on the 

 Chazy of western Vermont are also made. 

 18S4. Ami, H. M. A Classified List of the Cambro-Silurian and Post Tertiary Fos- 

 sils from Ottawa and Vicinity. E.xtract from Transactions, No. 5, Ottawa 

 Field Naturalists Club. 

 Not seen. 



