INDEX. 



423 



Geosaurus, ........ 82 



Gold mining in the United States, ..... 17 



mines, character of the formation of, . . . . 27 



mine, Rappahannock, report by Professors Del Rio and Millington, 147 



Grauwacke fossils common to Europe and America, . . . 269 



Haematitic iron ore, ....... 191 



Hamites, . . . • • ■ • • .244 



Haanii, 245, 249 



Harlan, on the structure of the teeth in the Edentata, fossil and recent, 40 



critical notices of the organic remains of the United States, 46 

 description of a new Trilobite and observations on the genus 



Triarthus, ....... 263 



description of fossil coal plants from the Alleghany mountains, 256 

 description of the OS ilium of the Megalonyx, . . 347 

 description of the remains of the Basilosaurus, a large fossil 

 marine animal recently discovered in the horizontal lime- 

 stone of Alabama, ...... 348 



description of the new fossil plant Equisetum, . . 260 



Harper's ferry section, . . . . . . . 319 



Horizontal beds of Fredericksburg, ..... 311 



fossil plants in, . . . 320 

 Horse, fossil, . . • • • ■ .61 



Hydraulic limestone, analysis of (in note), .... 319 



Hydrate of iron, ...... 181 



Ichthyolites, . • • • • • ... 88 



Ichthyosaurus Missouriensis, ...... 80 



Indian village imder ground, ...... 25 



Iron ores of Blossburg, ....... 208 



from Morris's run, ...... 221 



from Pen Yan, Yates county, New York, . . . 358 

 ore beds in Bedford county, Pennsylvania, . . .177 

 Jsotelus planus, ....... 103, 248 



Johnson's creek, ....... 205 



Johnston, J. C, notice of fossil corn, . . . . . 414 



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



Kidney ore from Blossburg, . . ■ • • • 231 



Kishacoquillas valley, ancient lake of, .... 194 



map of, . . . . • . 198; 



geological section of, . . . 198 



creek of, ..... 198 



organic remains of, . ■ ■ . . 200 



minerals of, . • • • • 200 



emptying of its ancient basin, . . 201 



fracture of its barrier, . . . . 202 



Knorria imbricata^ . . • 190 

 Koehler, H. on the anthracite deposit of Taraaqua, Schuylkill county, 



Pennsylvania, ....... 326 



