warman.] CRETACEOUS CHOW. 87 
Cretaceous rocks of Oregon, Coos Bay quadrangle GF 73, pp 1-2 
of Oregon, Port Orford quadrangle GF 89, p 2 
of Rocky Mountain region, table of Ann 22, in, p 423 
of Sierra Nevada Ann 1 7, i, p 547 
of South Dakota Bull 21, p 11 
Black Hills Ann 22, in, p 423 
Oelrichs quadrangle GF 85, pp 3-4 
of States. (See, also, formation names under this heading.) 
of Texas Bull 4, pp 7, 12; Bull 184, p 38 
Austin quadrangle GF 76, p 2 
of Utah Ann 22, m, p 423; Bull 34, pp 13-19 
of Virginia, Norfolk quadrangle ( i F 80, p 2 
of Wyoming, Black Hills Ann 22, in, p 423 
Oklune series of Alaska Ann 22, in, p 529 
Patapsco formation of Maryland, clays of PP 11, p 141 
Pierre shale of Colorado GF 71, pp 1, 3 
of South Dakota GF 85, p 4 
Potomac formation Bull 43, pp 100-103 
of Virginia, Norfolk quadrangle GF 80, p 2 
Potomac and Tuscaloosa formations Ann 12, t, pp 421-424 
Potomac group of New York City district GF 83, p 10 
Raritan formation of Maryland, clays of PP n. pp 141-142 
of New York, New York City district GF 83, p 10 
Ripley formation of Alabama Bull 43, pp 71-83, 1 16, 132-133 
Rockville conglomerate of Iowa, northeastern Ann 11, i, p 234 
Rotten limestone of Alabama Bull 43, pp 83-8(3, 110-117, 131 
Silo sandstone of Indian Territory GF 79, p 6 
Saratoga chalk-marl of Arkansas Ann 22, in, pp 714-725, 733 
Severn formation of middle Atlantic slope Ann 12, i, p 421 
Shasta group of California Bull 15, p 10 
Taylor marls of Texas Bull 184, p 38; GF 76, p 5 
Timpas formation of Colorado GF 71, pp 1 , 3 
Tordrillo series of Alaska Am 22, in, p 528 
Travis Peak formation of Texas GF 76, p 3 
Trinidad sandstone of Colorado GF 71, pp 1, 3 
Trinity division of Texas GF 7<>, p 3 
Trinity sand of Arkansas and Texas Ann 22, in, p 697 
of Indian Territory GF 79, p 5 
Tuscaloosa formation of Alabama Bull 43, pp 95-100, 104-116, 117 
Wallala beds of California Bull 19, pp 11, 16 
Walnut clay of Texas GF 76, pp 3-4 
AVashita division of Texas GF 76, p 5 
Wealdenof England, origin, character, and fossil plants of ..Ann 16, i, pp 474-500 
Webberville formation of Texas GF 76, p 5 
Whitecliffs formation of Arkansas Ann 22, in, pp 700-714, 732 
Woodbine formation of Texas Bull 184, p 38 
Cretaceous system, definition of Ann 14, i, pp 42-43 
Crinoidal limestone of Pennsylvania, Ohio, and West Virginia Bull 65, pp 90-91 
Cripple River and Penny River regions, Alaska, gold in N and N, pp 91-96 
Cross (W.), geology of Silverton quadrangle, Colorado, outline of.. Bull 182, pp 29-39 
work in charge of Ann 22, i, pp 82-85; Ann 23, pp 38-39 
Croton River, flow of, measurement of WS 47, pp 79-80; WS 65, pp 76-83 
rainfall, run-off, and evaporation in basin of WS 80, pp 76, 86-87, 99 
Crow Creek, Montana, flow of, measurement of WS 49, p 266; WS 66, pp 21-22 
Crow Ridge series of Montana, Elkhorn district Ann 22, n, pp 440-442 
