486 BULLETIIT 109, UNITED STATES NATIONAL MUSEUM. 



the general geology and locating the principal deposits of useful 

 minerals, so far as known. He had as assistants Messrs. J. C. Nagle, 

 C. A. Huppertz, R. A. Thompson, and H. B. Jones. In September 

 Mr. Nagle left the survey to accept an appointment as assistant 

 professor of engineering at the agricultural and mechanical college. 

 Tarr made a reconnoissance of the Guadalupe Mountains, and then 

 resigned to accept work at Cornell University. Cunnnins took up 

 the detailed stud}- of the coal measures of the central coal field, 

 making careful instrumental sections across them and locating the 

 outcrop of the two workable seams across the territory. 11. T. Ilill 

 was appointed geologist in charge of the Cretaceous area, and as sucli 

 studied the geology of the Red River region from Texarkana to 

 Denison, having as assistants Messrs. J. S. Stone, J. A. Taff, L. T. 

 Dashiel, G. H. Ragsdale, and W. T. Davidson. He resigned from 

 the survey on September 30. 



The work in east Texas was under the personal supervision of Mr. 

 Dumble. Mr. W. Kennedy mapped the iron ores of Cass, Harrison, 

 and other counties and made reconnoissance of Gregg and Marion. 

 Mr. Herndon mapped the iron ores of Smith County and Mr. Walker 

 those of Rusk, Panola, Shelby, and Nacogdoches. 



A part of Penrose's collections of Tertiar}' fossils were studied by 

 Prof. A. Heilprin; parts of the Cretaceous collections were sent to 

 Dr. F. Roemcr at Breslau: and Prof. Alpheus Hyatt determined and 

 described a nmnber of nautiloid forms from Cummins's collections. 



The chemical laboratory was moved to the basement of the capitol 

 late in 1889 and Mr. L. E. Magnenat appointed assistant, and on the 

 resignation of Mr. Tilson to accept the position of assistant professor 

 of chemistry at the agricultural and mechanical college, all the 

 chemical work w^as concentrated at the survey laborator3'. 



But little progress was made in museum work, but the library was 

 enlarged by purchase as much as the funds would permit. 



To supply a demand from the public high schools a number of 

 small collections of minerals were made up and 40 of them were 

 distributed during the year. 



Results. — Under the heading Mineral Resources of Texas in 

 the second annual report, 1890, Mr. Dumble gives a sunmiary of the 

 mineral deposits found to exist in the State, and also describes the 

 various artesian water belts found within it. The bulk of this vol- 

 imie, containing 800 pages, is made up of the detailed reports of the 

 various geologists and assistants. The papers are as follows: 



Report on tlie Iron Ore District of East Texas: r.pneral statement and re- 

 ports on Anderson and llonston Counties, E. T. Dumble; Chai-coal manufacture 

 in Texas, John Birkiubine : I.iyuites and their utilization, O. Lercb; Reports 

 on Cass. Marinn, Harrison. (JregfJ, Morris. TTpshur, Van Zandt, and Henderson 



