‘90 University Geological Survey of Kansas. 
used by him provisionally in volume I because exact correla- 
tions were not definitely known. Later, Haworth and Kirk?’ 
named them the Erie limestone, on account of their prominent 
development to the northwest of Erie. Still later Adams gave 
names to the three individual limestone formations as they 
occur to the south, and, as above stated, suggested the name 
Bronson limestone for their combination on the north, ‘inas- 
much as the name Erie was previously occupied. 
In 1872 Broadhead?* gave the name Bethany Falls limestone 
to a limestone formation which in his general section is num- 
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 at 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 on the upper 
surface of this limestone. 
Keyes’? suggested that the name Bethany limestone be ap- 
plied for quite a series of rocks occurring northward in Mis- 
souri and Iowa, but has never been able to give a definite de- 
scription of them. Consequently we cannot use the term here 
as he used it for the reason that we do not know to what ex- 
tent he wished it applied. 
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,2° which term, by Adams’s recommenda- 
tion, has in general been accepted by the United States Geo- — 
logical Survey and used in their Bulletin 238, page 18. 
Thickness.—The Bethany Falls limestone is described orig- 
inally in the Uniontown section by Bennett as 22 feet thick. 
Southward it gradually grows thinner until it gradually dis- 
appears in the vicinity of Mound Valley. To the northeast, 
27. Haworth and Kirk: Kan. Univ. Quart., vol. 11, p. 108. Lawrence, 1894. 
28. Broadhead, Dr. G. C.: Mo. Geol. Surv. Rep., 1872, pp. 76, 77, 79, 80, 97, 167, 
29. Keyes, Dr. C. R.: Mo. Geol. Surv., vol. x, p. 45, et seq. 
30. Adams, Dr. George I.: U.S. G.S., Bull. 211, p. 35. Washington, 1908. 
