76 Kansas Academy of Science. 



bered 78, and described it as occurring on the south bank of 

 the Missouri river at the end of the Hannibal bridge, Kansas 

 City, and at a number of places in the north part of the state. 

 The abutment on the south end of the Hannibal bridge rests 

 directly on this limestone, and the Missouri Pacific tracks be- 

 tween the bridge abutment and the river also rest upon the 

 upper surface of this limestone. 



Recent investigations by this Survey have demonstrated con- 

 clusively that the Bethany Falls limestone of Broadhead, his 

 number 78, is the lower member of Adams's Bronson lime- 

 stone, of the ''triple system" of Bennett, and of the Erie lime- 

 stone of Haworth and Kirk. Priority requires, therefore, that 

 the term Bethany Falls be used to designate this lower lime- 

 stone formation. It will therefore replace the name Hertha 

 limestone of Adams," which term, by Adams's recommenda- 

 tion, has, in general, been accepted by the United States 

 Geological Survey and used in their Bulletin No. 238, page 18. 



Ladore Shales.'" — The name Ladore shales is used by Dr. 

 Geo. I. Adams to designate the shales lying between the Beth- 

 any Falls limestone below and the Mound Valley limestone 

 above. It is now used with that significance. 



Mound Valley Limestone." — The name Mound Valley 

 limestone was used by the Kansas Survey in volume I of their 

 reports at the suggestion of Doctor Adams, who, at that time, 

 was one of the field assistants. Later, Adams" abandoned this 

 name and introduced in its stead the name Dennis limestone, 

 without giving any reason for so doing. His writings, how- 

 ever, show that he confounded the Mound Valley limestone 

 with the one first above, or, rather, he recognized only three of 

 the four limestones occurring here, and therefore dropped one 

 name. This Survey still uses the name Mound Valley, as it 

 did originally, to designate the limestone of the hills immedi- 

 ately northwest of Mound Valley. 



Galesburg Shales.'' — The name Galesburg shales was pro- 

 posed by Adams to designate, as he put it, "the rocks occupy- 

 ing the interval between the Hertha limestone and the Dennis 

 limestone." As has already been shown, Adams in some way 

 overlooked the existence of the Mound Valley limestone, which 



19. Adams, Dr. Geo. I., U. S. G. S. Bull. 238, p. 35, Washington, 1903. 



20. Adams, Dr. Geo. I., U. S. G. S. Bull. 238, pi. II, 1904. 



21. Adams, Dr. Geo. I., Kan. Univ. Geol. Surv., vol. I, p. 23, Lawrence, 1896. 



22. Adams, Dr. Geo. I., U. S. G. S. Bull. 211, p. 36, Washington, 1903. 

 _ 23. Adams, Dr. Geo. I., U. S. G. S. Bull. 211, p. 36, Washington, 1903. 



