1^^-^- 



(^ 



^^ 



CONTENTS. 



XV.— The Parallel Drift-Hills of Western New York. By Lauk- 



EKCE Johnson (with Plate XVIII ■, 249 



XVI. — The Origin alid Relations of the Carbon Minerals. Bj^ J. 



S. Newberky, 267 



XVII. — Descriptions of Two Xew Species of Birds from Yucatan, 

 of the Families Columbid* and Formicariidae. By George 

 N. Lawrence 287 



(I 



