A RECOED OF THE GEOLOGY OF TEXAS FOR THE 
DECADE ENDING DECEMBER 31, 1896. 
FREDERIC W. SIMONDS, Ph. D., 
Professor of Geology in the University of Texas. 
(Publication authorized February 3, 1899; presented to the Academy June 
12, 1899.) 
PREFATORY NOTE. 
This Record of the Geology of Texas supplements Bulletin No. 45 of 
the United States Geological Survey (^^The Present Condition of Knowl- 
edge of the Geology of Texas/^ hy Robert 'T. Hill, Washington, 1887). 
Doubtless its imperfections are many, nevertheless’, it will serve as a 
guide fo those who desire to know what, where, and by whom, work has 
been done in the past ten years — a decade especially fruitful in results. 
The many papers of value produced by my predecessor. Professor Hill, 
now of the U. S. Greological ‘Survey, and by the Geological Survey of 
Texas (Humble Survey) are embraced within this period. Broadly 
speaking, our knowledge of Texas geology may now be said to rest on a 
firm foundation — details are yet to be worked out; errors corrected. 
The libraries of the University of Texas and of the lately discontinued 
Geological Survey, as well as my own, have been carefully gone over, and 
in addition I have drawn freely upon the work of others, of which I 
wish here to especially mention the excellent Records of Mr. N. H. Bar- 
ton, of the U. 'S. Geological Survey (Bulletins Nos. 75, 91, 99 and 127), 
and the valuable Bibliographies' and Indexes of Mr. F. B. Weeks, also 
of the U. S. Geological Survey (Bulletins Nos. 130, 135, 146 and 149). 
With few exceptio'ns contributions to newspapers are not included, as 
they are usually inaccessible, and the matter is 'found in a more perma- 
nent form elsewhere. 
Frederic W. Simonds. 
School of Geolog}^, University of Texas, 1897. 
A delay in printing this Record has enabled me to add much that would 
otherwise have been omitted. I desire here to express my obligations to 
Mr. E. T. Humble, lately State Geologist, for information that has been 
