683 



Page. 



Boulders In "West Philadelpliia 647 



Brontotlieriuin Injens 2 



Bunsen Qas Apparatus. Oresson 429 



Burette Valve. K5nig. Britton 181,188,191 



Coal of Somerset. Fulton 157 



Coal of Ellengowan. Cresson 175, 429 



Coal of Eocky Mountains. Britton 187, 191, 358, 361 



Coal of Eocky Mountains. Stevenson 447 



Coal Beds Discovered in No. X. Ashburner 638 



Coal of BigSewell Mountain. Harden 177 



Coal Beds of West Virginia. Stevenson 370-402 



Cold, Cause of Unusual. Blodget 150 



Color of the Moon. Frazer 2,155 



Colorado Prehistoric Eemains. Cope 139 



Corundum. Genth 180 



Cosmical Evolution. Chase 159 



Cosmical Thermodynamics. Chase 141 



Costa Eiea Ethnology. Gabb 483 



Cremation among the Pah-Utes. Hoffman 191, 414 



Development, Origin of. Chase 622 



Egypt's Population, &c. Delmar 184 



Electrical Spectra of Metals. Outenbridge 162 



Elie de Beaumont's Statue 427 



Ellengowan Coal Analyses. Cresson 429 



Eobasileus Galeatus. Cope 17 



Exfoliation of Granite. Frazer. ... 192 



Explosion at Kirkbride's HosiMtal. Briggs 419 



Fault at Port Clinton. Chance -. 300 



Formulae for Mineral Species. Frazer 180 



Fossil Ore at Tyrone. Lesley 102 



Galvanometer for Lectures. Barker 438 



Geology of Spruce Creek. Lesley 19, 83 



Geological Survey of Pennsylvania 185 



Geology of Lake Erie Shore. Lesley 440 



Geology of West Virginia. Stevenson 370, 402 



Glacial Drift beneath the Virginia Shore 18 



Glacial Action at the Water Gaps. Hall 620 



Glacial Moraine at Philadelphia > 633, 644 



Glaciation in the South Mountains 647 



Glyceric Acid. Sadtler 615 



Gneiss Mountains Formerly at Philadelphia 436 



Gold in Nova Scotia. Poole 189 



Granite Exfoliation. Frazer 192 



Gravitating Waves. Chase 344, 420 



Heating Power of Coals. Cresson 175 



Ichthyology of Utah. Cope 129 



Indian Sculpture at Bald-friar 13 



Indian Tribes of Costa Eica. Gabb 483 



Iron and Steel Under Magnetism. Cresson 603 



Langdale (W. Va. ) Coal Land Model 177 



Languages of Costa Eica. Gabb 483 



Lntent Heat of Meteors. B. V. Marsh 114 



Lepidopterae of North America. Grote 189 



Lignitic Beds of the West 187,447 



Limonites of York County. Frazer 364. 370, 433 



Lunar Monthly Eainfall. Chase 416-418 



Magnetic Forces. Chase 612 



