520 PROCEEDINGS OF THE ACADEMY OF 



December 2d. 

 The President, Mr. Lea, in the Chair. 



Twenty-eight members present. 



The following papers were presented for publication : 

 A Review of the Ferns of North America. By Elliott Coues. 

 Catalogue of the Miocene Shells of the Atlantic Slope of the United 

 States. By T. A. Conrad. 



Dr. I. I. Hayes made some remarks on some fragments of a supposed 

 meteorite presented by him to the Academy. They were obtained from 

 Savisavik, a little below Cape York, lat. 76 N. The mass was described by 

 the Esquimaux as weighing several tons. 



By resolution, the thanks of the Academy were tendered to Dr. 1. 1. 

 Hayes for the very valuable series of specimens collected in his last 

 Arctic Expedition and presented to the Academy. 



December 9th. 

 The President, Mr. Lea, in the Chair. 



Nineteen members present. 



The following papers were presented for publication : 

 Descriptions of new and recent Miocene Shells. By T. A. Conrad. 

 Remarks on some species of Paludina, Amuicola, Valvata and 

 Melania. By James Lewis, M. D. 



December 16th. 

 The President, Mr. Lea, in the Chair. 



Twenty members present. 



December 23c?. 

 The President, Mr. Lea, in the Chair. 



Twenty-three members present. 

 The following paper was presented for publication : 

 Description of Fossils from the Yellow Sandstone lying beneath the 

 Bur lington Limestone, &c. By Alexander Winchell." 



Mr. Cassin communicated the fact that the Snow-Owl is at present unusually 

 frequent in the vicinity of Philadelphia, more so than he had ever known it 

 previously to be. 



Dr. Hayes referred to his having discovered remains of the Musk Ox, in 

 Greenland, from lat. 78 to 78 20', where the animal is now extinct. Speci- 

 mens of these remains had been presented to the Academy. He also made 

 some remarks on the extinction of the Esquimaux in Northern Greenland. 



December dOth. 

 The President, Mr. Lea, in the Chair. 

 Twenty-three members present. 



[Dec. 



