IV 



CONTENTS. 



mains of the Gigantic Mastodon, Mammoth, and Mega- 

 lonyx JelFersonii, are found. By G. Troost, M.D., Pro- 

 fessor of Chemistry, Mineralogy and Geology in the 

 University of Nashville, Tennessee ; Member of the 

 Geological Societies of France and Pennsylvania, &c. 

 &c., 139 



10. Report of the Committee appointed by the Geological 

 Society of Pennsylvania to investigate the Rappahannock 

 Gold Mines, in Virginia, ..... 147 



11. Analysis of the Copper Ore of Hunterdon county. New 

 Jersey. By T. G. Clemson, Esq., formerly of the Royal 

 Schoolof Mines of Paris, &c. &c., . . . 167 



12. Miscellaneous Intelligence, . . . . . 168 



PART II. 



• 1. On the relative position of the Transition and Secondary 

 Coal formations in Pennsylvania, and description of some 

 Transition Coal or Bituminous Anthracite, and Iron ore 

 beds near Broad Top mountain, in BedforcJ county, and of a 

 coal vein in Perry county, Pennsylvania. With Sections. 

 By Richard C. Taylor, F.G.S. Lond., &c. &c., . 177 



2. Notice as to the evidences of the existe^e of an Ancient 



Lake, which appears to have formerly filled the Limestone 

 valley of Kishacoquillas, in Mifflin county, Pennsylvania. 

 By Richard C. Taylor, F.G.S. Lond., &c. &c., . 194 



3. On the Mineral Basin or Coal Field of Blossburg, on the 



Tioga river, Tioga county, Pennsylvania. By Richard 



C. Taylor, F.G.S. Lond., &c. &c., ... 204 



4. Examination and Analysis of several Coals and Iron Ores, 



accompanying Mr R. C. Taylor's account of the Coal 

 Field of Blossburg. By T. G. Clemson, Mem. Geol. 

 Soc. Penns., &;c. &c., 219 



5. On the Pentremites Reindwardtii, a New Fossil ; with re- 



marks on the Genus Pentremites (Say), and its Geog- 

 nostic position in the states of Tennessee, Alabama and 

 Kentucky. By Gerard Troost, M.D., &c., . . 114 



6. Description of a New Species of Fossil Asterias (Asterias 



Antiqua). By G. Troost, M.D., &c., . . . 232 



7. On the Localities in Tennessee in which Bones of the Gi- 



