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46 INDEX. 
Page. 
Caves, in gypsum P 16, 18 
Ceriopora 26 
Cerusite 37 
Coal 27,31 
I or Ila 14, 19, 29 
Conglomerate, silicious 30 
Conularia 26 
Cretaceous Li; 19, 25, 27 
at Dofia Ana 17,19 
fossils 17, 27, 39—40 
of Alabama ; 25 
between Fort Belknap and Preston 27 
Crow Spring : 20,21 
Cross Timbers 2 
Cyathophyllæ 32 
D: 
Darwin, Charles 18, 26 i 
Dawson, J. W 18,26 j | 
creek 21 f 
Des Moines, gypsum of 18 4 
Doña Ana 17 
silver mine near 37 
sand 20 
Drift 16, 21 
E. 
Easter, Dr. J. D 31,38 
JE florescence of salt 20 
Emory, Major W. H. 12,17,40 
Encrinites ; 32 
Exogyra Te : 17, 27, 39 
a 
Fenestella 26 
Ferruginous sandstone 29 
Fort Washita, Cretaceous at ds 
Fort Belknap 24, 25 
section of strata at » 
G. 
36—37 
Garrard, Lieutenant 7,22 
Geological section, note on 42 
Geological map, note upon 42 
u 8, 12, 13, 14, 30 
for building purposes 29,30 
Gray, A. B 14 
Great Basin 9 
Grypluea 17,27,39,40 
Guadalupe mountains, extent and direction of. Fareru ed areder divin Ari wa ao adii uia dde ci Locke nuum T 
elevation of ....,.. 8 
geol of. 14 
water at the base 22 
Guadalupe Pass, elevation of 8 
Gypeum formation : 16, 17, 18, 19, 25, 34 
À of South America , 
of Nova Scotia 18, 26 
