Report of the State Geologist. 185 



1830 . Amos Eaton . A geoWgic text-book accompanied by a geologic map of 



the State of New York . 

 1842. E. Emmons. Geology of New York; report 2d district; map of the 



county of Jefferson, geological map of Clinton county. 

 1849. Asa Fitch. Survey of Washington county. (Two maps.) 

 1851. J. Delafield. Survey of Seneca county. (Map.) 



1851. G. Evans. Survey of Madison county. 



1852. Ledyard Lincklaen. Survey of Madison county. (Map.) 



1853. W. C. Watson. Survey of Essex county. (Maps.) 

 1860. G. Geddes. Survey of Onondaga county. (Maps.) 



1862. G. Denniston. Survey of Steuben county. 



1863. G. Denniston. Survey of Orange county. 



1884. B. H. Wright. Notes on the geology of Yates county. (Map.) 



1885. J. M. Clarke. A brief outhne of the geological succession in Ontario 



county. (Map.) 

 1885. C. E. HaU. Geological map of Essex county. 

 18,88. E. B. Knapp. Onondaga county. 



I comniunicate herewith the report of Professor John M. 

 Clarke, assistant palaeontologist, giving an account of the condi- 

 tion of the collection of fossils in the State Hall, and showing the 

 accessions from various sources; and the work which is going on 

 in the arrangement and distribution of this material to which 

 reference has already been made. The most interesting collec- 

 tion is that made by Mr. D. D. Luther, at the Livonia salt shaft, 

 which will give us the exact horizon and the vertical range of 

 species in a section of the strata measuring nearly 1,500 feet. It 

 is hoped that we may be able to give a very complete account of 

 this collection with illustrations, of at least some of the new 

 species, in the report of 1893. Some steps have already been 

 taken in this direction and unless some unforeseen interference shall 

 occur, the entire report upon the Livonia salt shaft in its physical 

 and faunal aspect will be presented in that report. 



The collection sent by Mr. Raymour of Kansas City, Missouri, 

 illustrating the fauna of the formations in the towns of Cass and 

 "VVaverly, Cass county, Indiana, is a very interesting one, the col- 

 lection containing numerous representatives of the faunas of the 

 Corniferous and Hamilton horizons without any indication ihat 

 these formations are se])arated from each other by a change 

 of lithological character or other conditions. For the sake of 

 geologic science it will be an interesting inquiry to determine 

 whether there may ^ not be a Line of separation between the two 



