Massachusetts Institute of Technology, \ 

 Boston, Mass., Dec. 14, 1896. j 



Professor James Hall, State Geologist: 



Sik. — I have the honor to transmit herewith for publication, an account 

 of the Faunas of the Hamilton Group of Eighteen-Mile Creek and Vicinity. 



Respectfully yours, 



AMADEUS W. GRABAU. 



229 



