474 N. H. BARTON — CATALOG OF PHOTOGRAPHS 



1102. Beecher rocks, erosion in pegmatite, south of Custer, South Dakota. 



1105. Jurassic sandstone on Red beds, near Hot Springs, Black hills, South Dakota. 



1138. Decomposition of tuff and stalagmites, Pilot Knob series, Texas. 



1139. Bored limestone above tufa, Pilot Knob series, Texas. 

 1144. Rain erosion, Travis Peak series, Texas. 



1208. Fields of residual clay near Natural bridge, Virginia. 



1269, 1270. Cliffs near Bald mountain, Big Horn mountains, Wyoming. 



Wind Erosion 



(See also Bad Lands, Weathering, and Castellated Topography) 



22G. Rhyolite, Mono valley, California. 



700. Gering formation, Banner county, Nebraska. 



