CONTRIBUTIONS 



TO THE 



PALEONTOLOGY OF NEW-YORK; 



BEING SOME OF THE RESULTS OP 



Investigations made daring the Years 1855, '56, '57 & '58. 



BY JAMES HALL. 



The following notices and descriptions of new genera, with other investigations, 

 have been communicated, in part or entirely, at different times, to the Albany 

 Institute; to the Reports of the Regents of the University on the State Collections 

 of Natural History, for the years 1856 and 1858; to the American Association for 

 the Advancement of Science; and are already printed in the third volume of the 

 Palaeontology of the State of New- York. 



