n 



Vili CONTENTS. 



Page. 



Art. VIII. Petroleum, its History and Properties, by David 

 Murray, - 149 



Art. IX. Description of a New Machine for Cataloguing and 

 Charting Stars, by Gr. W. Hough, A. M., - - - 167 



Art. X. Observations on the Design and Import of Medals, by 



Henry A. Homes, 176 



Art. XI. The Sunbeam and the Spectroscope, by Howard 

 Townsend, M. D., 182 



Art. XII. Notice of some New Species of Fossils from a Lo- 

 cality of the Niagara Group, in Indiana; with a List of 

 Identified Species from the same Place, by Prof. James 



Hall, - 195 



Art. XIII. A Plan for a Park for the City of Albany, by 



David Murray, - 229 



Proceedings of the Albany Institute, 1858 to 1863, - - 243 



