613 , 



Cope, E. ».: On The Saurodontidse 529 



" Fisliss of the fresh water tertiary in Idaho, discovered by Capt. 



Clarence King 538, 553, 559 



" Contribution to the Iclithyology of the Marafion 496, 559 



" Eighth Contribution to the Herpetology of Tropical America, 496, 



513,553 



" Idaho freshwater fossil fishes 571 



" Mososaurus maximus, &c 571 



" The Adocidae '. 547 



" Species of Pythononiorpha, from Kansas and New Mexico 574 



" Fossils from W- India Island caves 608 



J>ul3ois, "W. E.: On Specimen of silver ore 92 



" Silver Coins struck at the Mint 233 



" Written communication respecting Lake Superior silver mines 527 



Sa-vidson, Geo. : On obtaining the longitude of San Francisco 91 



Emerson, G.: On an improvement in Whitney's Cotton Gin 84 



" Robbin's process for preserving woodfrom mould and decay.. Ill 



" The part taken by the Am. Phil. Soc. in establishing stations 



lor meteorological observations 516 



" Information concerning the earthquake of Oct. 20th, 1870 522 



Frazer, Persifer, J»-.: A chart exhibiting all the metallurgical processes now 



employed at Friberg, with descriptive text 442 



Gentli, F. A.: On Rhodium Gola in San Domingo and gold sand from the soil of 



Philadfilpliia , 439 



" On native lead and iron in gold tailings from Moniana Territory. . 443 



Haldermaii, S. s.: On Beads from Indian graves 369 



Haydeii, F. V.: Notes on the geology of Wyoming and Colorado Ter. No. 2... 15, 431 

 " Appendix to his report on Geology of Yellow and Missouri Rivers 112 



" Geological map of the Upper Missouri 115 



" Field notes on the geology of Colorado and New Mexico 212, 234 



" Description of a large collection of fossil fishes, insects, &c 316 



" Photographs of fossil fish 368 



" Three sections of strata belonging to the Bear river group, Wyo- 



mingTerritory 370, 420 



" Preliminary list of fossils collected in New Mexico and California 



by F. BoUeck. 425 



" Description of fossil fishes from the upper coal measures of Ne- 

 braska 431 



Horn, a, H. : On the revision of the Tenebrionidas of America 115 



Kirkwood, D. : On the periodicity of the sun's spots 92, 95 



" Comets and meteors 213, 215 



" The periodicity of certain rings ,299 



" The mass of Asteroids between Mars and Jupiter 498 



liea, Isaac; On thirteen new species ofCrinoidea 14 



Lesley, J. P. ; On the Aurora Borealis of April 15th Ill 



', Section across the Alleglieny mountains 115 



' ■ Tornado at Cave Ci ty in Kentucky 277 



lio^ivrie, W, H. : Some suggestions on the maintaining forces of Cosmical motion 195 

 " A search for the normal cause of the recession of Cosmical 



nodes 213, 220 



Marsli : On the meteors of August 24th, 1869 194 



Marston, Com. : On relics from Vera Cruz 83 



Mayer, Alfred: Abstract of results of measurements and examinations of the 



photographs of the total eclipse of August 7. 1869 202, 204 



McCJiire : Drawings of the appearance of the sun in the eclipse of Aug. 7, 1869 202 



McBfeil : On his Explorations in Central America 515 



Morion : Pierce's photographs of the eclipse 202 



Orr, Hecior: Extraordinary mildness of the winter illustrated 279 



" " On the hail storm of May 8th , 438 



Pepper : On a unique case of Universal Hyperostosis 671 



Porter, T. c. ; In<lian inscriptions 3 



Roscoe, Or. : Letter respecting a supposed Laurentian fossil 237 



Kotlnvell : New map of the Anthracite Coal Basins 113 



Slieafer, P, W. : Boring records in the Anthracite Region 93, 107 



" Coal borings in the Wilkesbarre Basin 235 



Tyson, Phillip T. : Section of the Cumberland Coal Basin 9 



"Winciiell ; Alexander : On the Geological Age and equivalents of the Marshall 



Group, part 1. II 15, 57, 245, 275, 369, 385 



Wood, G. B. : Indian relics from southern New Jersey 213 



" Experiments on the revival of peach trees 2.37 



" Comnuniicaiions concerning an Indian skeleton 283 



Wood H. C. Jr.,: Prodomus of a study of the fresh water Algte, of eastern 



North America , 119 



" Concerning recent experiments witli Veratria 214 



" ■ On the medical activity of the hemp plant as grown in North 



America '. 226 



On the fresh water Algaj of the United States 571, 574 



