Raymond: Thf^ Chazy Formation and its Fauna. oSl 



845. Bayfield, Captain H. W. On the Junction of the Transition and IViniary 

 Rocks of Canada and Labrador. Quarterly Journal of the Geological 

 Society of London, Vol. I, p. 450. In discussing the Mingan Islands, 

 this author writes : 



" The Mingan Islands are entirely composed of limestone, havitig a 

 slight dip to the southward. So also is the Island of Anticosti, which, 

 from its position to the southward, and similar dip, may be expected to be 

 higher in the Silurian series. The limestone of these islands resembles that 

 of Lake Huron, which is very nearly horizontal, although there is a dight 

 dip, which, continued for many miles, must give a very considerable thick- 

 ness to the whole range, measuring from the lower beds that rest on the 

 granite of the mainland to those that dip gradually beneath the sea on the 

 southern coast of Anticosti, to form the summits of the unvisited ridges of the 

 interior of the island, five or six hundred feet above the sea. 



" The following arc the most abundant fossils of the islands of Mingan : 



1. Illtenus crassicaudu, 5. Terebratuhi p/icalel/d {won '^owexhy), 



2. Ortlioceras duplex, 6. Eiiermis ? 



3. Ortlioceras annulatiis, 7. Lepticna Humboldtii, 



4. Eiiomphalus, 8. PUurotoniaria.''' 

 The fossils were identified by de Verneuil. 



1846. Adams, C. B. Second Annual Report of the State Geologist of V'ermont. 



In the second report of the Vermont State Geologist, the name Chazy is 

 not used, but the name Isle La Motte limestone substituted for it in describ- 

 ing a section from Snake Mountain to the lake, and in a section at Lara- 

 bee's Point, Shoreham. 



On page 39 is a wood cut, labeled a " chambered shell, Fisk's quarry. 

 Isle La Motte." It is an outline drawing and too poor an illustration to be 

 identified, but is interesting as the first figure of a Chazy cephalopod. 



1846. Emmons, E. Agriculture of New Vork, Comprising an Account of the Classi- 



fication, Composition and Distribution of the Soils and Rocks and the Natural 

 Waters of the Different Geological Formations, Together with a Condensed 

 View of the Climate and .\gricultural Productions of the State. 



1847. Hall, James. Paleontology of New Vork, Vol. I. 



In the first volume of the New Vork State Paleontology, a considerable 

 number of Chazy fossils are described and illustrated, and a few observations 

 made upon the formation as a whole. That a part of the formation was still 

 referred to the Birdseye is shown by the fact that Calymene viiilticosta [Plio- 

 nierops canadensis^ was described from the " Birdseye " of Isle La Motte. 



1847. De Verneuil, E. Note sur le Parallelisme des Roches des Depots Paleozo- 

 iques de I'Amerique Septentrionale avec ceux de 1' Europe, Suivie d'un Tab- 

 leau des Especes Fossiles Communes aux Deux Continents, avec 1' Indication 

 des Etages oii elles se Recontrent, et Terminee par un Examen Critique de 

 Chacune de ces Especes. Bulletin of the Geological Society of France, 

 Series 2, Vol. 4, pt. i, pp. 646-707. 



