REPORT OF COMMITTEE ON PHOTOGRAPHS. 481 



585. Erosion of slaty banded limestone ; bed of Cedar creek, about one mile below 



Natural bridge, V;i. 



586. Plicated slaty limestone : same locality as 585. 



587. Contorted slaty limestone ; same locality as 585. Massive limestone in fore- 



ground. 



588. Folds in Cambrian shales; northern bank of Cedai creek, one and a half miles 



below Natural bridge, Va. 



589. Folds in Cambrian sandstones and shales ; railroad cut about one and a half 



miles above Hamilton, Tenn., on Doe river. 



590. Compressed anticlinal and fault plane in Nashville sandstone; near western 



end of Little river gap, ( 'liilhowee mountain, Tenn. 



591. Cliff of Cambrian sandstones; southern side of Doe river gorge, about two 



miles above Hampton, Tenn. 



592. Cliff of Cambrian sandstone ; northern side of Doe river gorge, about two miles 



above Hampton, Tenn. 



Photographed by W. PL \\\>ei\, 1891. 



593. Lakelet in moraine ; Little Timber creek, Crazy mountains, Mont. 



594. Amphitheater at head of Little Timber creek. 



595. Lake " " " " " " occupies a rock basin. 



596. < 'rags of Laramie conglomerate ; Brackett creek, Montana. Same rock as seen 



in 597. 



597. Laramie conglomerate : formed of pebbles of volcanic rocks: Brackett creek. 



Park co., Mont. 



598. Morainal debris; characteristic of mountain moraine of Crazv mountains. 



Mont. 



Photographed by J. Stanley-Brown, 1891. 



599. Seal rookery ; shore of Saint Paul island, Pribylov group, Alaska. 



600. Crater lake; 300 feet above sea, Saint Paul island, Pribylov group. 



601. Black Muff; Fossil-bearing tuff of Cinder cone, Saint Paul island. 



603. Contact of two basalts ; Black bluff, Saint Paul island. 



604. fault in calcareous clays and sands ; eastern side of Rio Verde, 8 miles below 



camp Verde, Arizona (photographed by Cosmos Mindeleff i. 



/'/•( si a/ 1 1 1 I hi i In Geological Survey of Canada ; Dr. A Ifred R. ( '. Selwyn, Director, Ottawa, 



< 'm, ailu. 



Sizes of photographs : 605 to 630, Q\ x8; 631 to 635, 11 x 14. (Original numbers in 



parentheses i. 



Photographed by Dr. Geo. M. Dawson. 



615 (57, Sept. 16, 1889). Fraser river ; Fountain, British Columbia. Showingdepth 

 of post-glacial excavation in glacial deposits with which the valley has been 



partly tilled. 



606 (79, Aug. 27, 1890 . Part of the Interior plateau of British Columbia; looking 



southeastward from Porcupine ridge (altitude, 6,030 feel , 

 i in7 I 77, Aug. 26, 1890). Glaciated surface of basal 1 ; illustrating action of pari of the 



'j real Cordillera n -lacier, flowing southeast ward at a heighl of 5,930 feet above 

 sea-level. 



