486 



Conchology, Nathan Farraiid elected 

 Curator of, 316. 



Conglomerate of Roxbury, thought to 

 belong to New Red Sandstone period, 

 by Jules Marcou, 183; ciiange from, 

 into almost jaspery rock, li>3. 



Conglomerate, Vermont, Edward Hitch- 

 cock on distorted pebbles in, 208; 

 Dr. C. T. Jackson on, 209. 



Connecticut River sandstone, fossil foot- 

 marks of, probably not made by bii'ds, 

 316. 



Consecutive Faunee, &c., Prof. Agas- 

 siz's second communication on, 250. 



Copper and silver of Lake Superior, 

 native, theory of formation of, 31. 



Copper mine at Bath, N. H., 349. 



Cordiceps Carolinensis, growing from 

 under surface of caterpillar, 79. 



Cormorants, breeding habits of, in Flori- 

 da, 18. 



Corj-nactis albida, Agassiz, 24. 



Crania and casts of Gorilla, Chimpan- 

 zee, and Orang, 53. 



Crepidula foi'nicata. Note on, 78. 



Crinoidea and other fossils from the 

 Carboniferous rocks of the Mississippi 

 Yalley, by Prof. J. Hall, 428. 



Crithe, nov. gen., Gould, 384. 



atoinaria^ Gould, 384. 



Crotophaga Ifevirosfris, Bryant, 105. 



Cuba, List of birds of, by Dr. John 

 Gundlach, 305. 



Cm"atorship of Conchologv, resigned by 

 Mr. A. T. Lyman, 293. " 



Cyanocitta Floridana, 9. 



Cj'clostrema viodeshmi^ Gould, 142. 



Cylichna consohrina., Gould, 141. 



ellipsoidea, Gould, 140. 



IcBta, Gould, 140. 



melampoides, Gould, 140. 



operosa, Gould, 140. 



protracta, Gould, 140. 



regularise Gould, 140. 



tubulosa, Gould, 140. 



villica, Gould, 139. 



Cynogale velox, Du Chaillu, 361. 

 Cyprinodon ovinus, 76. 



Cyrenella, Synonymy of species of, 



by Temple Prinie, 345. 

 Cythara lota, Gould, 339. 



Dams, vibrating, Wm. Edwards's ex- 

 planation of, 153. 



Danais Berenice, Svnonymv of, by 

 Dr. T. W. Harris, 189. 



Daphnella deluta, Gould, 339. 



Darwin's theory of the origin of Spe- 

 cies, Prof.Agassiz on, 231, 233, 235, 

 241; Prof. W. B. Rogers on, 232, 234, 

 242 ; G. B. Emerson on, 234. 



Datholite from Lake Superior, Eco- 

 nomic vahie of, 354. 



Deer, American, observations on shed- 

 ding their antlers, by Prof. J. Wyman, 

 167. 



Dendrocygna ai'borea, 122. 



Dennis River, Me., Stratification near, 

 Prof.. W. B. Rogers on, 227 ; fossilif- 

 erous sandstone from, 227 ; slate, 227. 



Dentalium nciculum, Gould, 165. 



buccinulian, Gould, 166. 



clavatum, Gould, 166. 



hexanonum, Gould, 166. 



intercalatum, Gould, 166. 



jJOJ'catiim, Gould, 166. 



strigatum, Gould, 166. 



Dermestes, ravages of in poisoned ob- 

 jects of Natural History, 5. 



Derry earth, list of Diatomacese in, 286. 



Devonian gradually passing into a Car- 

 boniferous Fauna, 320. 



Devonian fossils from Saco River, 409. 



Diatomacece from Bemis Lake earth, 

 and from Cambridge, list of, 284; 

 from Bi'ookline, 285; from ]\Iaidstone, 

 Derry, and Hingham, 286; from Bais- 

 ley's Pond peat, 287; from intestines 

 of Echini, 136; from North Provi- 

 dence, Mr. L. \V. Bailey on, 322; in 

 peat marl from Milwaukee, list of, 79; 

 some sub-peat deposits of, by A. M. 

 Edwards, 283; distorted specimens of, 

 more common than normal ones, 81 ; 

 list of, from \V. Roxbury, Mass., 26; 

 methods of collecting, preparing, and 

 mounting, Arthur M. Edwards on, 89. 



Discina stella, Gould, 324. 



Dolichonyx orizyvora, 119. 



Drillia ehorea, Gould, 337. 



reciproca, Gould, 336. 



vallata, Gould, 336. 



Dryotoraus pileatus, 11. 



Dunkeria effusa, Gould, 407. 



Eagle, Caracara, perhaps two species 

 of, 21. 



Earth's crust, circumstances affecting 

 the method of determining its thick- 

 ness by law of increasing temperature, 

 Prof. W. B. Rogers on, 47. 



Echinoderms, relations among and gra- 

 dations in their various orders. Prof. 

 Agassiz on, 272. 



Elephants, numbers of destroyed in a 

 swamp, 175. 



Emarginula (Clvpidina) aliilis, Gould, 

 162. 



jjileata, Gould, 162. 



(Clypidina) radiata, Gould, 



162. 



(Clvpidina) textilis, Gould, 



162. 



Empidonax BaJuanensis, Bryant, 109. 



Entomology, Samuel H. Scudder elected 

 Curator of, 35. 



