[45] That is, the inner bark deprived of the epidermis or outer bark, by the shaving knife. CONTENTS. GEOLOGY, TOPOGRAPHY, AND MINERALOGY. Page Art. I. On the Geology, Mineralogy, Scenery, and Curiosities of Parts of Virginia, Tennessee, and of the Alabama and Mississippi Territories, &c. with Miscellaneous Remarks, &c. In a Letter to the Editor. By the Rev. Elias Cornelius 317 Art. II. On the Origin of Prairies. By Mr. R. W. Wells 331 Art. III. Sketch of the Mineralogy and Geology of the Vicinity of Williams' College, Williamstown, Mass. By Professor Dewey, of Williams' College, in a letter to the Editor 337 Art. IV. On the Tourmalines and other Minerals found at Chesterfield and Goshen, Massachusetts, by Col. George Gibbs 346 Art. V. Observations on the Minerals connected with the Gneiss range of Litchfield county, by Mr. John P. Brace, of Litchfield, Conn. 351 BOTANY. Art. VI. An Account of two North American Species of Rottböllia, discovered on the Sea-coast in the State of Georgia, by Dr. William Baldwin, of Philadelphia 355 Art. VII. Floral Calendar kept at Deerfield, Massachusetts, with Miscellaneous Remarks, by Dr. Stephen W. Williams, of Deerfield 359 Art. VIII. Description and Natural Classification of the Genus Floerkea, by C. S. Rafinesque, Professor of Botany and Natural History in the Transylvania University, Lexington, Ken. 373 Art. IX. Descriptions of Three New Genera of Plants, from the State of New-York. Cylactis, Nemopanthus, and Polanisia, by Professor C. S. Rafinesque 377 Art. X. Notice on the Myosurus Shortii, by the same 379 Art. XI. Description of a New Species of Gnaphalium, by Professor E. Ives 380 FOSSIL ZOOLOGY, &C. Art. XII. Observations on some Species of Zoophytes, Shells, &c. principally Fossil, by Thomas Say 381 PHYSICS, CHEMISTRY, &C. Art. XIII. Observations on Salt Storms, and the Influence of Salt and Saline Air upon Animal and Vegetable Life. Read before the Lyceum of Natural History of New-York, March 7, 1819, by John B. Beck, M. D. 388 Art. XIV. Thoughts on Atmospheric Dust. By Professor C. S. Rafinesque 397 Art. XV. On the Effect of Vapour on Flame. By J. F. Dana, Chemical Assistant in Harvard University, and Lecturer on Chemistry and Pharmacy in Dartmouth College 401