FIFTH REPORT OF THE DIRECTOR I908 



II 9 



by a glance at the index, those between 1822 and 1834 being small 

 black and white etchings. 



We come now to the publication of the first geologic map of 

 New York State as a unit. This was Eaton's map published with his 

 " Textbook " in 1830. This is a curiously interesting hand-colored 

 map of the State. On it he divided the regular deposits accord- 

 ing to the following Wernerian scheme: five " classes " called Prim- 

 itive, Transition, Lower Secondary, Upper Secondary and Tertiary 

 were distinguished and these in turn were each divided into three 

 formations called " Carboniferous," " Quartzose " and " Calcare- 

 ous." The colors represented on the map are six, one color, slate, 

 representing all the " Carboniferous " formations, the Roman 

 numerals I, II and III representing whether they belonged to the 

 "Primitive" or "Secondary (Lower or Upper)." Other colors 

 represented the quartzose and calcareous formations, the variegated 

 red sandstone, one color being used for both the present Medina 

 and the Triassic red sandstone, or as he says " sandstones support- 

 ing salt springs or basalt," the " lias or ferriferous rocks of a sub- 

 ordinate series " roughly corresponding to the present Salina shales, 

 Basaltic rocks and " superficial shell marl " scattered in spots over 

 the southern tier of counties. 



Professor Eaton made a poor attempt at mapping the Adiron- 

 dacks. As they appear on his map they consist of alternating 

 bands of Primitive and Secondary Carboniferous and Calcareous 

 rocks. He notes in the text various Adirondack rocks most of 

 which are now known to be igneous, but says, " we infer that 

 granite, mica slate, 'hornblende rock, talcose slate, granular quartz 

 and granular limestone had all been deposited and become ir.- 

 durated before any plants or animals had been created." 



In the early thirties, various influences were brought to bear 

 upon the New York State Legislature, toward the establishment 

 of a museum of natural history and a geological survey of the 

 State. First of these was the work done by Professor Eaton from 

 1820 to 1830, which has already been noted. This work was car- 

 ried on under the patronage of Hon. Stephen Van Rensselaer. 

 In 1834 the Albany Institute 1 presented to the Legislature a memo- 

 rial asking for the establishment of a State Museum, and in 1835 

 the New York Lyceum of Natural History (The American Insti- 

 tute of the City of New York) presented a similar petition or 

 memorial. 2 



1 Senate Document no. 75. 1834. 



2 Assembly Document no. 374. 1835. 



