173 



February 21, 1844. 



Regular Meeting — The President in the Chair. 



Mr. Stodder gave a notice of the Report on the Mineral- 

 ogy of New York. 



He dwelt particularly on that part of the work which gives an 

 account of the saline and mineral springs of that state. The ori- 

 gin of these was inquired into, and the various theories on the sub- 

 ject stated and examined. 



Mr. James Hall, of New York, corrected some of the statements 

 of the work, and added some facts of his own observation. In 

 particular the occurrence of a knob of serpentine discovered by 

 himself in the neighborhood of Syracuse, being the only mass of 

 igneous rock known in the vicinity of the salt springs. 



Mr. Hall exhibited a geological map of the middle portion of 

 the United States, as far west as the Mississippi, compiled from his 

 own observations and information furnished by other geologists. 

 He also exhibited fossils from various localities, calling attention to 

 the fact, made obvious from the specimens shown, that fossils of 

 the same species are found of larger dimensions and fuller devel- 

 opment as we proceed westward. 



Dr. Gould read portions of a letter from Rev. Mr. Mason, 

 of Burmah, a Corresponding Member of the Society, ac- 

 companying some specimens of shells and seeds from that 

 region. 



ADDITIONS TO THE CABINET. 



A species of Raia, from Porto Rico, presented by /. Tyler, Jr. 

 Esq., of this city, was referred to Dr. Storer. The thanks of the 

 Society were presented to the donor. 



ADDITIONS TO THE LIBRARY. 



Mineralogy of New York, by Lewis C. Beck, M. D. 4to. Al- 

 bany, 1842. From the Author. 



Zoological Contributions, No. 3. 8vo pamph. From S. S. Hal- 

 deman. 



