GEOLOGICAL AITD NATURAL HISTORY SURVEYS. 485 



and J. S. Stone. A room Avas set ai)ai't for a jniiseum and was fur- 

 nished with cases and a start made toward the instalhition of speci- 

 mens sent in by the fiekl parties, Mr. J. B. Walker being in charge. 



The general results of the work of the first year are summarized 

 by Mr. Dumble in the first annnal report, 1889, (pp. xxix-lxxiii), 

 in which a brief statement is made covering the various geological 

 horizons recognized during the field work and the principal mineral 

 resources of each, fuller details being given in the accompanying 

 papers, pages 1 to 410, which comprise : 



A Preliminary Ileport of the Geology of the Gulf Tertiary of Texas, !>y 

 R. A. F. Penrose, jr. 



A Brief Description of the Cret.nceous Hocks of Texas and their Economic 

 Value, by Robert T. Hill. 



The Southern Border of the Central Coal Field, by W. F. Cummins. 



The Permian of Texas and Its Underlying Beds, by W. F. Cummins. 



Preliminary Report on the Coal Fields of Colorado River, by Ralph S. Tarr. 



Geology of Trans-Peoos Texas — Preliminary Statement, by W. H. von 

 Streeruwitz. 



Preliminary Reiiort on the Geology of the Centr.U Aiineral Region of Texas, 

 by Theo. B. Comstock. 



In addition to the first annual report the survey published during 

 the year : 



Bulletin No. 4. A Preliminary Annotated <,;h('ck Lisi cf (he Cretaceous In- 

 vertebrate Fossils of Texas, by R. T. Hill. 



Bulletin No. 2. A Preliminary Report on the Soils and Waters of the Upper 

 Rio Gi'ande and Pecos Valleys in Texas, by H. H. Harrington. 



These papers, after recounting as fully as possible the work of 

 earlier investigators, give, as far as the facts at hand seem to war- 

 rant, the results of the authors' own geological observations. Taken 

 in connection with the suiuniary by Mr. Dumble, they furnish the 

 first comprehensive description of the geology of Texas and are the 

 basis of the subsequent work of the survey. 



Wor/i', of second year {1800). — Dr. K. S. Woodward, in connec- 

 tion with his work of establishing the one luindred and fifth meridian, 

 remeasured the Texas base line and the principal triangulation points 

 of Von Streernwitz's previous year's work, \erifying its correct- 

 ness: and in November Captain Forney, of \he. United States Coast 

 and Geodetic Survey, reached El Paso for the woik of primary 

 Irinngulation of the Rio firande border. Von Streeruwitz, in ad- 

 dition to continuing the work of mapping the area, made such 

 examination as the conditions would permit of the mineral deposits 

 of the region. J. A. Taff Avas attached to Von Streernwitz's party 

 for the examination of the Cretaceons deposits of the area. 



Comstock completed the work begun in the central mineral region, 

 -ic-nring an accuraic topograpbic map of the area and ma})ping 



