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PUBLIC DOCUMENT No. 47 



State Geological and Natural 

 History Survey 



COMMISSIONERS 



ROLLIN S. Woodruff, Governor of Connecticut (Chairman) 



Arthur Twining Hadley, President of Yale University 



Bradford Paul Raymond, President of Wesleyan University 



Flavel Sweeten Luther, President of Trinity College (Secretary) 



RUFUS Whittaker Stimson, President of Connecticut Agricultural College 



SUPERINTENDENT 

 William North Rice 



Bulletin No. 11 



Hartford 

 Printed for the State Geological and Natural History Survey 



