COiNTENTS OF VOL. 11. 



BY THOMAS BLAND. 



PAGE. 



Description of a New Species of Triodopsis from New Mexico 115 



On the Relations of the Flora and Fauna of Santa Cruz, West Indies. 117 



Notes on Macroceramus Eieneri, Pfr. and M. poniificus. Gould 127 



Description of two New Species of Zonites from Tennessee 368 



BY H. CAKKINGTON BOLTON. 



Application of Organic Acids to the Examination of Minerals 1 



BY N. L. BRITTON. 



On the Geology of Richmond County, New York, (with Plates XV 



and XVI) 161 



BY P. T. OLEVE. 



Outlines of the Geology of the North-Eastern West India islands. 



^with Plate XVII^ 185 



BY THOMAS EGLESTON. 



On Zinc Desilverization, (with Plates III to XIII \ 81 



