532 



THE AMERICAN NATURALIST [Vol. XL 



loess, in which tlie Lansincr skeleton was found, determining that this 

 dei)osit is really not loess, and arraigns two or three recent supporters 

 of the aqueo-fluviatile origin of the la ss. 



The rapid development of underground workings at Oipple Creek 

 and the consequent increase in detailed information has made it desir- 

 able to resurvey the field. The results — embodied in Bulletin 345 

 of the United States Geological Siirveij, "Report of Progress in the 

 Geological Resurvey of tlie Cripple Creek District, Colorado," by 

 W. Lindgren and F. L. Ransome — furnish an a|)t illustration of the 

 present efficiency of the Survey. While there are modifications of 

 many of the details previously jjublished concerning the geology of 

 this very complex region, the main facts previously outlined are sub- 

 stantiated. An interesting note in this report ^i;it< - that the depth to 

 which the oxydation of the ore bodies has p. ii. tiaicd otictitimes a 

 thousand feet. 



"A Gazeteer of Indian Territory," by Henry Gannett, forms Bul- 

 letin 248 of the United States Geological Surre]/, })ublished in Wash- 

 ington, 1905. In addition to 59 pages devoted to i)lace names, there 

 are pages giving a brief description of the larger topographic fea- 

 tures, population, and products. 



