REPORT OF THE STATE GEOLOGIST. XXV 



CENTRAL MINERAL DISTRICT. 



In this district it was found necessary to add a topographic party to 

 that of Mr. Comstock, to secure correct maps and furnish other requi- 

 site data for his use. Mr. Nagle and two assistants were, therefore, 

 employed during the entire fall season in this most necessary work. 



GEOLOGY. 



TRANS-PECOS TEXAS. 



Mr. Streeruwitz completed the preliminary reconnaissance of Pre- 

 sidio, Buchel, Foley, and Brewster counties, finding in the mountain 

 ranges the same favorable conditions for mineral prospects as those 

 decribed in the First Eeport of Progress. 



In May he again took the field with instructions to begin a topo- 

 graphic survey of the Trans-Pecos District, and to devote the entire 

 season to this work, only using such time for geologic investigation as 

 could be given without hindering the progress of mapping. 



Prof. H. H. Harrington, of the Agricultural and Mechanical College, 

 was appointed to make an examination of the soils and water of the 

 Kio Grande Valley, which he did without any cost to the Survey be- 

 yond his actual field expenses. The results are embodied in Bulletin 

 No. 2. 



I visited this district three times during the season, and made such 

 examinations of the geology of the region as the short time at my dis- 

 posal permitted. 



NORTH TEXAS. 



Mr. Cummins completed his preliminary survey over the northern 

 portion of the coal field, and in March started for Lampasas for a simi- 

 lar investigation of the southern portion. Having completed this, I 

 instructed him to proceed westward and take up the studj T of the Per- 

 mian formation with its deposits of gypsum and salt. I joined his 

 party in October, and together we made a preliminary section from 

 Abilene north to Throckmorton County, and thence west to the Double 

 Mountains, in Stonewall County. There being no reliable maps of the 

 region, Mr. Drake was detailed to run a transit line and line of levels 

 for the purpose of getting an exact section, and joined Mr. Cummins in 

 November. This line and section was started from Albany, and runs 



