IDAHO 403 



Photographed by C. D. Walcoit 

 5 by 7 inches. Negatives in United States Geological Survey 



501. Basal Cambrian sandstones of section at mouth of Two-mile canyon, 2 miles 



south of Malad City, Idaho (No. 562a). 



Illinois 



Photographed by 0. C Farringfon, Field Columbian Museum, Chicago, Illinois 



5 by 7 inches 



502. Drift, section 5, Chicago drainage canal. Shows sudden transition from 



coarse drift to fine sand ; also highly inclined bedding (No. 2). 



503. Drift, section 5, Chicago drainage canal. 200 feet below number 502. Drift 



very coarse; boulders are limestone (No. 3). 



504. Section of kame, showing drift, Chicago drainage canal (No. 5). 



505. Drift on limestone, section 6, Chicago drainage canal. The upper surface of 



the limestone is broken and shattered at the contact with the drift, ap- 

 parently by resistance to glacial movement. The resistance was also 

 unequal, part of the limestone near the contact at the right having been 

 entirely carried away. The direction of glacial movement was from left to 

 right (No. 7). 



506. " Clay pocket," section 7, Chicago drainage canal. The limestone has under- 



gone differential internal disintegration, causing portions of the strata to 

 fall and become tilted. The section is 36 feet in height (No. 8). 



507. "Clay pocket," section 10, Chicago drainage canal. The hollow formed in 



the limestone by disintegration has been filled from above by drift (No. 9). 



Indiana 



Photograj)hed by F. V. Marsters 



508. Indiana oolitic stone quarry, Steinsville, Indiana. 



509. Weathering of Indiana oolitic limestone, near Herodsburgh, Indiana. 



510. Hunter's quarry (Saint Louis limestone), Bloomington, Indiana. 



511. Johnson's quarry, Bloomington, Indiana. 



512. End View. Largest block of stone (Indiana limestone) quarried up to Sep- 



tember, 1893. Size, 11 / 9" by 8' 8" by 10 / 4" ; 1,054 cubic feet ; weight, 

 190,000 pounds ; quarried by Bedford Stone Company, Bedford, Indiana. 



Photographed by W. P. Jenney 

 6^ by 8£ inches. Negatives in United States Geological Survey 



513. Anticline at termination of Ozark uplift in northeast corner of Indian Terri- 



tory, on Spring river, about 6 miles south of Baxter, Kansas. Panorama 

 of 4 negatives, Nos. 183, 184, 185, and 186. 



