8o8 



ERWIN H. BARBOUR 



deposition, the assumption being that they were rigid because 

 frigid. Accordingly we have coined for them, and for a long time 



Fig. I, A. — A bank of Kansan drift at Pleasantdale, Nebraska, showing 

 "frigites" of clay, sand, gravel, and pebbles (see B). Distance to bridge about 

 i,ooo feet. 



r 





>- , -Sis: 





Fig. I, B. — Key to A. Nos. i, 3, 4, 8, 10, 11, 13, 14, 17 represent sand blocks 

 ("sandfrigites"). No. 12 is a large cross-bedded sandfrigite about 30 feet long 

 partly buried by talus. No. 15 is a large very distinct sandfrigite about 30 feet long. 

 Nos. 2, 5, 9, 16 are supposed stream beds ("couleefrigites"). Nos. 6 and 7 are clay 

 blocks (" clayfrigites ") . No. 18 is a large Sioux quartzite bowlder. Total length of 

 section about i ,000 feet. 



have used as a convenient generic field name, the word "frigites," 

 and have used as specific terms the additional names "soilfrigites," 

 "clayfrigites," "sandfrigites," "gravelfrigites," "couleefrigites," 



