40 [June, 1841. 



STATED MEETING, June 15,1841. 



Vice President Morton in the Chair. 



DONATIONS TO THE LIBRARY. 



Encyclopaedia Brittanica. 21 vols. 4to. From Dr. God- 

 dard. 



Essai sur les Refractions Astronomiques dans la zone torride. 

 Par A. de Humboldt. 4to Paris, 1808. From Dr. Hallo- 

 well. 



Review of the References to the Hortus Malabaricus of 

 Henry Van Rheede van Draakenstein. By L. W. Dillwyn. 

 8vo. Swansea, 1839. From the author. 



DONATIONS TO THE MUSEUM. 



Rhastezite and large Dodecaedral Garnets, from Lincoln 

 county, N. Carolina. From Dr. Blanding. 



Mineral Charcoal, from the Nesquehoning mine, in contact 

 with Anthracite; and magnetic iron ore with adhering 

 gangue, obtained three miles from Rockaway, Morris 

 county, N. Jersey. From. Prof. Johnson. 



Written Communications. Professor Johnson submitted 

 the result of his experiments " On the relation between the 

 coal of South Wales and that of some Pennsylvania anthra- 

 cites." 



Having received some time since a number of samples of the 

 coals used by Mr. Crane at the Yniscedwyn iron works in South 

 Wales, some pains have been taken to trace the relation of that 

 mineral to some of the many varieties of anthracite found in Penn- 

 sylvania. It was the first step in this inquiry to mark the relation 



