REPORT OF THE STATE GEOLOGIST. lxXV 



I submit herewith the reports of the several field geologists, and for 

 the details of their work refer to them. 



ACKNOWLEDGMENTS. 



The thanks of the Survey are due to the great number of citizens of 

 the State who, by their interest and help, have contributed to the work 

 of the field parties. These favors have been so numerous that it is im- 

 possible to make separate mention of them. 



To Major J. W. Powell, Director of the United States Geological 

 Survey, this Survey is indebted for many favors, among which may be 

 mentioned permission to make use of the Texas portion of the plates 

 of his new map of the United States, which here appears as our Pro- 

 gress Map. 



To Professor T. C. Mendenhall we are indebted for the use of the 

 base-bars used in measuring the base line in Trans-Pecos Texas. 



Mr. G. Browne Goode, Assistant Secretary of the Smithsonian In- 

 stitute, rendered us great assistance by furnishing plans, photographs, 

 and descriptions for the museum cases and their arrangement in the 

 room. 



My own thanks are especially due to the different members of the 

 Survey, who, by faithful and earnest work, have made this Report — so 

 full of detail, and covering such an extent of country — a possibility. 



