THE DEVONIAN SECTION OF ITHACA, N. Y.' 



HENRY SHALER WILLIAMS 

 Ithaca, N. Y. 



At a meeting of the American Association for the Advancement 

 of Science, June 29, 1906, the following chart was exhibited before 

 Section E with explanations (an abstract of which is given below), 

 under the title " Revision of the Geological Section Running through 

 Ithaca, N. Y." 



REVISED CLASSIFICATION AND NOMENCLATURE OF THE SECTION 

 PASSING THROUGH ITHACA, N. Y. 



*In the chart as pubKshed in Science (Vol. XXIV, p. 366) this figure is 300'; see beyond remark on 

 thickness of Ithaca. 



ABSTRACT 



The accompanying chart expresses the result in classification 

 and nomenclature of the resurvey of the section of the Devonian 

 passing through Cayuga Lake valley and Ithaca, between the Third 

 and Fourth Districts of the original geological survey of the state 



' Published by permission of the Director of the United States Geological Survey. 



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