GEOLOGICAL AND NATURAL HISTORY SURVEYS. 489 



the geologists and assistants, appearing in the second report of 

 progress and in the third annual report, 1891. These comprise : 



Report of the State geologist, E. T. Duinble. 



Report on Houston County and Section from Terrell to Sabine Pass, W. 

 Kennedy. 

 IJauo Estiicado or Staked Plains, VV. F. Curumius. 



Notes on the Geology of the Country West of the Plains, VV. F. Cummins, 

 Stratigraphy of the Triassic Formation in Northwest Texas, N. F. Drake. 

 Report on Paleontology of the Vertebrata, E. D, Cope. 

 Shells Collected in a Dry Salt Lake near Eddy, New Mexico, V. Storki. 

 Reports on the Cretaceous Area North of the Colorado River, ,T. A. Taff. 

 Trans-E'ecos Texas, W. H. von Streoruwitz. 



In this volume the general geological section of the first year's 

 work is expanded by the additional information secured, especially 

 in the western and northwestern portions of the State. 



The results of the lignite investigation by Mr. Durable were pub- 

 lished separately as a Report on the Brown Coal and Lignite of 

 Texas, a volume of 243 pages, giving descriptions of the various 

 methods of utilizing lignites in German}- and Austria, descriptions 

 of all known occurrences of lignite in Texas, with analyses, compari- 

 son of the lignites of Europe and Texas, and recommendations as to 

 their utilization. 



Work of the fourth year {1892). — In the coastal area a preliminary 

 section was made by Messrs. Durable, Cragin, Kennedy. Singley, and 

 Eagsdale, through Lee, Washington, and Waller counties, after 

 which Mr, Kennedy took up the detailed examination of Grimes, 

 Brazos, and Robertson counties. Mr. Singley remained at Gal- 

 x'eston until the completion of the well at 3,070 feet, securing a 

 large collection of material from it. 



Mr. Taff, assisted by Mr. Leverett, extended the work of the pre- 

 vious year northward from Waco to Red River, with especial refer- 

 ence to the artesian water conditions of the area, Messrs. Drake and 

 Thompson made a detailed study of that part of the Carboniferous 

 area lying between the Colorado and the Brazos divides, carefully 

 mapping the coal seams and other beds of value, 



E. D. Cope, with Cummins, made a trip along the Llano Estacado 

 for the purpose of collecting vertebrate fossils from the Triassic and 

 Tertiary beds, after which Cummins's Avork embraced the examina- 

 tion of special localities in the Permian or red beds arcu, including 

 the copper horizons. 



Von Streeruwitz continued his work in west Texas. Dr. A. Osann 

 was appointed mineralogist and potrographor of the survey and 

 began work in December. Messrs. IMagnenat and Wooten were in 

 tharge of the laboratory until September 1, when they resigned. Dr. 



