CONTRIBUTIONS FROM THE GEOLOGICAL DEPARTMENT 

 OF COLUMBIA UNIVERSITY 



VOL. XVII, NO. 26 



A CRITICAL SUM/WARY OF TROOST'S UNPUBLISHED 

 MANUSCRIPT ON THE CRINOIDS OF TENNESSEE 



(Bulletin 64, United States National Museum) 

 ELVIRA WOOD 



Submitted in partial fulfilment of the requirements for the 

 Degree of Master of Arts, in the Faculty of Pure Science, 

 Columbia University 



