426 



INDEX. 



Remains of the Basilosaurus recently discovered in Alabama, . 348 



Report of the Committee of Inspection, .... 409 



observations on, . . 411 

 appointed by the Society to investigate the 



Rappahannock gold mines in Virginia, . 147 



Reptilia, fossil, . . . . . . • • 76 



Rhinoceroides Alleghaniensis, ...... 62 



Richmond coal field, section of, ..... 275 



geological character of its vicinity, . . 275 



general character of, . . • . 180 



fossil remains of, .... 290 



analysis of some of its coals, . . . 295 



Ruminantia, ........ 70 



Saltpetre cave, Tennessee, . ... . . . 238 



origin of this salt, . . . - . 238 



formation of, . . . . ■ ■ 239 



Sarcinula costata, . . . . . . . 249 



Sauria, . . • • • • • • . 70 . 



Saurocephalus lanciformis, . . . . . . 83 



leanus, ....... 83 



Saurocopros, . - . .... . . 88 



Saynisch's run, . . . • • • . . 205 



Scyphia Neesii, . . • . • • • • 249 



stellata, • . . 249 



Secondary and transition coal formation in Bedford county, Penn., 177 



Shells, fossil, from Alleghany Portage, . . . . 267 



Silicious conglomerates and millstone grit of Blossburg, . . 216 



ore from Blossburg, . . .... . 221 



Smith's creek, . . . • • . - • 205 

 Sphyrsena, . . • • • • • .92 



Spirifer, . • 249 



Splint coal of Blossburg, . . . . • • 213 



Striaticulmus, . . . • • • • ■ 190 



Stromatopora concentrata, . . . . . . 248 



verrucosa, . . . • • • 248 



Strophomene rugosa, . . . . • • • 249 



Sulphuretted ferruginous earth of Kent county, Delaware, . . 33. 



Siyringopora ramulosa, . . . . . . • 249 



Table of specific gravity, contents, weights, «fec. of the coal, iron and 



stone of the mineral basin of Blossburg, . . . • 219 



Tamaqua, its anthracite deposits, . . . . • 326 



Tapirus mastodontoides, . . ... . 59 



Taylor, description of fossil fucoides, ..... 5 



review of geological phenomena in 250 miles of sections in 

 parts of Virginia and Maryland; also notice of certain fossil 



plants in the secondary strata of Fredericksburg, . . 314 

 on the relative position of the transition and secondary coal 

 formations in Pennsylvania, and description of some transi- 

 tion coal or bituminous anthracite and iron ore beds, near 



