^.\N^ii 



CONTENTS. 



eEOLOGY, MINERALOGY, TOPOGRAPHY, &c. 



page. 

 Art. I. Geology, Mineralogy and Scenery of the Connecti- 

 cut, with a geological map and drawings of organ- 

 ic remains, by the Rev. Edward Hitchcock, A. M. 1 

 n. A memoir on the Topography, Scenery, Mineralo- 

 gy, &c. of the Catskill Mountains, by James 



Pierce Esq. 86 



in. Speculative Conjectures on the probable changes 

 that may have occurred in the regions east of the 

 Stony Mountains, by William Maclure Esq. - 98 



BOTANY. 



IV. Rev. Edward Hitchcock, on a new species of Bo- 



trychium, (with a drawing.) . . - 103 

 V. Professor S. L. Mitchill and Dr. John Torrey, on a 



new species of Usnea from New South Shetland, , 

 (with a drawing.) - - - - - 104 



CONCHOLOGY. 



VI. Mr. D. W. Barnes on the Genera Unio and Alas- 



modonta, (with eight plates of the shells.) - 107' 



PHYSICS, CHEMISTRY, &c. 



VII. Mr. Isaac Orr on the formation of the Universe, 



(with diagrams.^ - - - - - 128 

 VIII. Dr. James Cutbush on the formation of cyanogene 

 or prussine, in some chemical processes, not 

 heretofore noticed. - - - - - 149 

 IX. Mr. Henry Seybert's analysis of mangahesian gar- 

 net, with a notice of Boric acid in tourmalines. 155 

 X. Dr. William Meade's letter, with an account of a 

 travelled stone, — -copied from the transactions of 

 the Wernerian Society of Edinburgh. - - 168 

 XI. Professor Cleaveland's notice of some remarkable 



balls of snow. - 162 



XII. Professor J. F. Dana's miscellaneous notices. 163 



XIII. Mr. S. Morton's account of an ancient mound near 



Wheeling in Virginia. - ^ - - - 166 



