TOWNSHEND — TRIGONIA 183 



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TowNSHEND, J. , Fossil plants collected by 1, 315 



Trail beds, Description of 3, 374 



Trap dikes near Kennebunkport, Maine 1, 31 



— rocks, Intrusive origin of. . . . 1, 562 



— sheets of Connecticut 2, 417 



, Triassic 2, 321, 339 



Trask, J. B. , cited on age of auriferous slates 5, 244 



Cliico formation 4, 245 



Sierra Nevada granite 6, 77 



California fossils 5, 444 



Carboniferous of California 4, 221 



Pacific Coast ranges 6, 73 



Tertiary age of Pacific Coast ranges 6, 76 



— , Collections by 3, 414 



— , Refei'ence to work done in California by 6, 75 



Treasurer's report 4, 376 ; 5, 614 ; 6, 429 ; 7, 456 ; 8, 365 ; 9, 395 ; 10, 416 



Trenton fauna in the Champlain valley 10, 456 



— fish remains 3, 158 



— fishes of Colorado, Reference to 9, 89 



— limestone. Analyses of 3, 358 



, Definition of 3, 356 



of Canada 6, 299 



Clinton county. New York 6, 286, 287 



, Rock pressure of natural gas in 1, 87 



gas. Reference to 9, 99 



Trias and Jura in the western States ; A. Hyatt ... 5, 395 



of California 3, 395 



— , Fossils of the 2, 318 ; 5, 247-250, 399 



— of Alaska 3, 495 



Atlantic slope 2, 434 



seacoast. Deformation of. 5, 200 



California 3, 372 



— — Connecticut 5, 515 



Idaho 5, 399 



Massachusetts .... 5, 517 ; 7, 6 



Nevada 5, 399 



Texas 2, 505; 6, 376 



— , Plant-bearing deposits of the American ; Lester F. Ward 3, 23 



Triassic conglomerates. Origin of 2, 223 



— formation in Connecticut, Two belts of fossiliferous black shale in the ; 



W. M. Davis and S. W. Loper 2, 415 



— of Massachusetts (On the) ; B. K. Emerson 2, 431 



— trap 2, 340 



of New England 8, 59 



Trigonia bed. Description of 3, 406 



— naviformis. Naming of species 3, 407 



— obliqtia, Naming of species 3, 407 



— phimasensis, Naming of species 3, 407 



