84 [September, 1841. 



frequent receptacles of avalanches of ice and snow from the super- 

 jacent mountains, presenting the rumbling sound and tremulous 

 sensation of an earthquake, and forcing vast bodies of water over 

 the precipice to make their way by the courses of the Amazon to 

 the Atlantic ocean, a distance of five thousand miles. 



STATED MEETING, September 21, 1841. 

 Vice President Morton in the Chair. 



DONATIONS TO CABINET. 



Mr. Ashmead presented the following specimens for the 

 geological collection : 



Bowlder of secondary limestone, containing many beauti- 

 fully preserved Cyrtocera, Orthocercc, &c, found on the 

 northern shore of Lake Ontario. 



Asaphus Wetherellii, (Green.) 



Platynotus Boltoni, (Conrad.) 



Fucoides Harlani, (Conrad.) 



Cariocrinus ornatus, (Say,) and the tail of Bumastus Barri- 

 ensis, (Murchison,) the head of a Platynotus, and several 

 varieties of Corallines. 



Chrystallized fieldspar, from Rossie, New York. 



A framed portrait of William Hembel, Esq., president of 

 the society, painted by Mr. John Neagle, was presented by 

 the following members : Charles A. Poulson, Samuel George 

 Morton, John P. Wetherill, William S. Vaux, George W. 

 Carpenter, Thomas Fisher, Caspar W. Pennock, Alfred L. 

 Elwyn, Henry F. Leib, Thomas Nuttall, Judah Dobson, 

 Lardner Vanuxem, Robert Pearsall, Charles A. Poulson, Jr., 

 Charles N. Bancker, Robert Bridges, James C. Booth, Paul B. 

 Goddard, Joseph Carson, Thomas D. Mutter. 



