44 TRANSACTIONS OF THE [NOV. 16, 



The sixth papei* was by Mr. Frederick Braun, " On some new 

 Minerals from New York Cit}^, with exhibition of specimens." 

 Mr. Braun described a new discovery of chondorite, spinel and 

 little balls of graphite, with some undetermined and excessively 

 hard inclusion from the ledges in the western part of Fordham. 

 He also mentioned a new occurrence of Wollastonite from the 

 city. The paper was discussed by Dr. J. J. Friederich, who 

 stated that he had discovered a " similar association of these min- 

 erals at the shaft of the new aqueduct in Morris Heights, and 

 by Prof, J. F. Kemp, who remarked on the interest attached to 

 this association of minerals because of the difference of opinion 

 prevailing among geologists as to whether they indicated contact 

 metamorphism or merely regional metamorphism. 



The last paper of the evening was b}^ Prof. J. F. Kemp, en- 

 titled " Exhibition of interesting minerals collected during the 

 summer." The speaker exiiibited covellite, goslarite, enargite, 

 ohalcocite and tetrahedrite from Butte Montana, which were ex- 

 ceptionally fine crj'stals. Remarkabh' large prisms of andalu- 

 site from the Black Hills were also shown and zircons and 

 allanite from Mineville, Essex county, New York. 



A collection of chalcodite from a quarr}- near Reading, Penn- 

 sylvania, was exhibited by Mr. Roebling of Trenton, New Jer- 

 sey in connection with the paper by Professor Chester. 



The Secretary read by title the two following papers which 

 were referred to the Publication Committee. Bashford Dean 

 " Note on the Ventral Armoring of Dinichth3'S," " On a new 

 Species of Edestus, E. Lccontei^ Dean." Both appear in full 

 below. 



The Academy then adjourned to inspect the minerals. 



J. F. Kemp. 

 Secretary. 



