454 New York State Museum 



Scott, W. B. 



1924 An Introduction to Geology. 816p. 2d ed. rev. New 



York 



Shelford, V. E. & Towler, E. D. 



1925 Animal Communities of the San Juan Channel and 



Adjacent Areas. Puget Sound Biol. Sta. Pub. 

 5 : 33-73 



Sherzer, W. H. & Grabau, A. W. 



1909 New Upper Siluric Fauna from Southern Michigan. 

 Geol. Soc. Amer. Bui. 19:540-53 



Shimer, H. W. 



1905 Upper Siluric and Lower Devonic Faunas of Trilo- 

 bite Mountain, Orange County, New York. N. Y. 

 State Mus. Bui. 80:173-269 



Smith, B. 



1916 The Structural Relations of Some Devonian Shales 

 in Central New York. Acad, of Nat. Sci. Proc. 

 68:561-69 

 1929 Influence of Erosion Intervals on the Manlius- 

 Helderberg Series of Onondaga County, New York. 

 N. Y. State Mus. Bui. 281:25-36. (Bibliography) 



Steidtmann, E. 



1915 Summaries of Pre-Cambrian Literature of North 

 America for 1909, 1910, 1911 and Part of 1912. 

 Jour. Geol. 23:81-91 



Sumner, F. B. 



1908 An Intensive Study of the Fauna and Flora of a 

 Restricted Area of Sea Bottom. Bureau of Fisher- 

 ies Bui. 28:1227-61 



Ulrich, E. O. 



1911 Revision of the Paleozoic Systems. Geol. Soc. Amer, 



Bui. 22:281-680 

 1913 The Ordovician-Silurian Boundary. Advance copy 

 pub. for International Geological Congress, 12th 

 Session, Canada 1913. 50p. 



1926 Relative Values of Criteria Used in Drawing the 



Ordovician-Silurian Boundary. Geol. Soc. Amer. 

 Bui. 37:279-348 



