The Lance Creek Beds, JJ\'Oiiiing. — Hatcher. 373 
to examine a little more in detail the reasons he has assigned 
for his opinions. 
First, as to the doubt which he expresses as to the strati- 
graphical position of the Laramie beds of Converse county, 
Wyoming, being at the end (close) of the Fox Hills. I am 
somewhat surprised at this expression of doubt on the part of 
Dr. Williston regarding the actual position relative to the Fox 
Hills of these beds in Converse county since I am well aware 
of his ability as an observer and of the fact that he himself at 
one time passed several weeks collecting from these beds, and 
that he should, therefore, be familiar with the stratigraphy of 
the region. Since I myself passed nearly four full years in 
collecting from these beds I may perhaps presume to speak 
with some authority on this subject. I have already described* 
the stratigraphy and sequence of the various formations of this 
region, and need only remark here that many good sections ex- 
ist and have been examined by the writer, commencing below 
with the Fort Pierre and continuing upward through the Fox 
Hills and the overlying Laramie, and on up into the Fort Un- 
ion beds. The sequence and relative positions of the various 
horizons are extremely simple, the region being one which has 
undergone little disturbance either since or during the depos- 
ition of the beds, so that there is nowhere m the entire region 
any obscurity as to the proper sequence of strata due either to 
alternating marine and fresh-water conditions or to faults, 
overthrusts or other disturbances or dislocations in the beds. 
That these beds conformably overlie the Fox Hills in this reg- 
ion has been stated by the present writer in the publication just 
mentioned, and this statement has been abundantly corrobor- 
ated by the investigations of doctors T. W. Stanton and F. H. 
Knowlton.f 
Next as to the "startling resemblance" which Dr. Williston 
believes to exist between the fauna of the Wyoming beds and 
those of both the Judith River and the Belly River beds, and 
which he thinks could not have resulted from the Wyoming 
fauna's having persisted "through the long interval represent- 
ed by so many thousand feet ( !!) of Fox Hills deposits, not 
to mention the Fort Pierre." Where, I should like to ask, does 
• Am.Journ. Sci., vol. xlv, pp. 135-144-. Feb., 1893. 
t Bull. Geol. Soc. Am., vol. viii, pp. 128-137. 
