THE NEBRASKA PERMIAN 3 59 



county while making his survey. In his report he mentions the 

 bands of cherty limestone so characteristic of the Kansas beds 

 and many other features that could only lead one to correlate 

 these formations. Unfortunately, it has been found impossible to 

 identify Dr. Hayden's sections along the Big Blue River. The 

 reasons for this are apparent when it is known that he speaks of 

 the bluffs at Blue Springs as being from ten to fifteen feet high, 

 when in reality they vary from fifty to ninety above the river. 

 Since Dr. Hayden's report nothing of importance was published 

 pertaining to these rocks until 1886, when L. E. Hicks, 1 then 

 Professor of Geology in the University of Nebraska, published 

 two short papers. These articles were so general in character 

 that it was impossible for any one to arrive at any definite con- 

 clusion regarding the area under discussion. In 1897 Prosser 

 published two articles in which he discussed and reviewed the 

 work of previous writers on the Paleozoic of Nebraska, and 

 compared the Missouri River rocks with the Kansas beds. In 

 the first of these articles 2 Prosser refers briefly to the exposures 

 along the Big Blue River, and concludes by saying : "These 

 rocks are undoubtedly of Permian age, and it is probable that 

 the Neosho formation, and possibly a part of the Chase, occurs 

 in Gage county." 



Since the discovery of Permian rocks in Kansas by Swallow 3 

 there has been a considerable time devoted to their study by 

 numerous geologists. The stratigraphical features are well 

 known and the fauna has been carefully studied, although there 

 is much to be accomplished in a more exhaustive study of the 

 fossil life. Recently Prosser 4 has brought together all of the 



'Transactions A. A. A. S., Buffalo meeting, 1886, and the American Naturalist, 

 Oct. 1886, pp. 882, 883. The data embodied in these two articles were taken from my 

 notes. 



2 Jour. Geol., Vol. V, p. 12. 



3 See Trans. Acad. Sci. St. Louis, Vol. I, pp. Ill, 112. 



4 See Bull. Geol. Soc. Am., Vol. VI, pp. 29-54; Jour. Geol., Vol. Ill, 1895, pp. 

 682-705 and 764-800; University Geol. Surv. of Kansas, Vol. II, pp. 55-96. See 

 also an article by Professor Haworth in the University Geol. Surv. of Kansas, Vol. 

 I, pp. 185-194. 



