681 



Davidson. -Poffe, 



On the Transit of Venus 423 



Delmar. 



On Egyptian Statistics 184 



On Spanish Statistics 422 



Dubois. 



On Assaying Metals at the Mint 177 



Emerson. 



On the Peach Growing Belt 175 



Fraley. 



On the City Tenancy of the Hall 428 



Frazer. 



On the Color of the Moon 2, 176 



On a Notation for Organic Compounds 18 



On Certain Mineral Formulse 180 



On the Exfoliation of Granite 1 92 



On a New Retort 419 



On Tyndall's Critics 420 



On Titanic Iron 430 



.On Microscopic Sections of Trap 430, 436 



On Yorls: County Limonites 433 



On the Glaciation of the South Mountains 647 



Fulton. 



On the Coal Beds of Somerset County 176 



Gabb. 



On the Indians of Costa Eica ^^ 



Genth. 



On Eecent Analyses of Limonites 9, 84 



Eeply to Dr. T. S. Hunt 180 



On American Tellurium Minerals 181, 636 



GOODFELLOW. 



On the Transit of Venus 191 



Grote. 



On North American Liejiidopteras 189 



Hoffman. 



On Pah-Ute Cremation 191, 436 



Haldeman. 



On a Sumatran Coin 16 



Haul. 



On Glacial Action at the(iaps 620, 641 



On Glacial Blocks at Philadelphia 647 



Harden. 



On Mining the Brown Hematites 99 



On a Model of Coal Lands in West Virginia 177 



Horn. 



On the Death of Trees in the Park 10 



On the Hea 1th of Houses 672 



Houston. 



On a New Form of Phosphorous 7 



On an Igneous Eock near Philadelphia 16 



KoNIGI^. 



On an Improved Burette Valve 181, 191 



On Perowskite in Arkansas 640 



