XCV1 REPORTS OF GEOLOGISTS. 



having routes and duties assigned so as to bring all together again at night, 

 usually in a new camp. In 1889 we made sixty-six camps, whereas in 1890, 

 owing to the difference in the country and the lack of subsistence except 

 what we carried, I was compelled to keep my whole force constantly within 

 reach, and to have the headquarters almost daily in motion. We therefore 

 made seventy-four camps in 1890 in a litlile more than three months. 



The work performed by individual members of the party is credited below: 



Mr. James C. Nagle. — While the topographic work has necessarily been 

 subsidiary to the geologic, the areas traversed and the maps constructed 

 having been in accordance with methods and designs of my own selection, it 

 is but just to state that the execution has been entrusted to Mr. Nagle from 

 the beginning. I have constantly given every detail such oversight as was 

 requisite in order to be able to assume responsibility for the accuracy of the 

 results, but the credit for such accuracy, and for the utmost faithfulness in 

 the performance of every detail of an exceedingly onerous task extending 

 over sixteen months, is due my assistant, whom I also owe frank acknowledg- 

 ment of many generous courtesies which were not demanded by his position. 

 The topographic portion of the map appended to this report will clearly attest 

 the justice of what is here written of Mr. Nagle's field and office work, but it 

 is proper to add that a very large part of the office work of 1890 has been 

 done by him without expense to the State. 



Mr. Charles Huppertz. — The duties assigned my chief geologic aid were 

 various, but mostly of a character which necessitated skill, endurance and 

 abilities of special character as an independent observer and collector. Mr 

 Huppertz's notes form, in many instances, a part of the basis upon which 

 important conclusions rest. I have satisfied myself most fully of his reli 

 ability and accuracy, and desire here to express my appreciation of his valu 

 able services. 



All the other assistants performed their duties well, and bore uncomplain 

 ingly the vicissitudes of an unusually trying season. Mr. Jones was em 

 ployed in meandering streams and tracing special geologic boundaries. Mr 

 Clark was for the most part engaged in keeping ^the record of the geology 

 within easy reach from the topographer's transit lines. Both these young 

 gentlemen are undergraduates of the University of Texas, and in their work 

 have reflected credit upon that institution. The rodmen and campmen have 

 my thanks for their unflagging zeal and faithful performance of every duty. 



Referring to the maps and my full report for a more detailed account of 

 what has been done in connection with the economic geology of the region, I 

 will only add a general statement of the manner in which the whole has been 

 accomplished, in order to give an idea of its thoroughness and accuracy. 



The small sketch map of transit and section lines illustrates the courses of 



