Record of Geology of Texas, 1887 - 1896 . 
89 
Dumble, Edwik T. 
A summary of the work of the Texas Geological 'Survey for 1890. In 
East Texas iron deposits and accompanying Tertiary and Quaternary 
strata were mapped and studied. iMore than a thousand square miles of 
iron deposits in that area. Investigation shows the lignite of East Texas 
to he of better quality than that of Europe. Professor Cummins’ dis- 
covery of Permian rocks. Tiyassic strata overlaid by conformable Ter- 
tiary along the eastern edge of the Staked Plains north of the Brazos. 
Dr. Comstock’s work in iCentral Texas. Occurrence of cassiterite. Dis- 
covery of large amounts of minerals containing some of the rarer elements. 
Professor iStreeruwitz'’s work in El Paso county, including Quitman, Sierra 
Blanca and other mountains.. The Cretaceous of that region. The exist- 
ence of free gold, gold and silver -bearing lead, copper and zinc ore re- 
garded as fully demonstrated- The discovery of platinum in the Quit- 
man mountains, El Paso county. 
135 , state Geologist. 
Second Annual Report of the Geological Survey of Texas, 1890 ; 
8 VO., pp. cix, 756; pi. xxviii. Austin: State Printing Office, 
1891. 
Letter of Transmittal (L. L. Foster, Conimissioiner of Agriculture, In- 
surance, Statistics and History, to Hon. J. S. Hogg, Governor). Financial 
iStatement. 
Contents: Report of iState Geologist. Reports of Geologists: W. von 
iStreeiuwitz, Theo. B. Comstock, W. F. Cummins, J. B. Walker, W. Ken- 
nedy,, J. H. Herndon. Accompanying Papers. Reports on the Iron Ore 
District of East Texas. Part I. General (Statement by E. T. Dumble. 
Part. II. iPiiels and their Utilization. Chapter I. Charcoal Manufacture 
in Texas, by John Birkinbine. Chapter II. Lignites and their Utilization, 
with special reference to the Texas Brown Coals, by Dr. Otto Lereh. Part 
III. Deseription of Counties. Chapter I. Cass County, by Wm. Ken- 
nedy. Chapter II. Marion County, by Wm. Kennedy. Chapter III. 
Harrison iCounty, by Wm. Kennedy. Chapter IV. Gregg County, by Wm. 
Kennedy. Chapter V. Morris, Upshur, Wood, Van Zandt, and Hender- 
son Counties, by Wm. Kennedy. Chapter VI. iSmith County, by J. H. 
Herndon. Chapter VII. Panola County, by J. B. Walker. Chapter VII'I. 
Shelby County, by J. B. Walker. Chapter IX. Rusk County, by J. B. 
Walker. lOhapter X. Xacogdoches iCounty, by J. iB. Walker. Chapter 
XI. Cherokee County, by J. B. Walker. Chapter XII. A^nderson County, 
by E. T. Dumble., Chapter XIIT. Houston County, by E. T. Dumble. 
Carboniferous Cephalopods, by Alpheus Hyatt. Report on the Geology of 
Northwestern Texas, by W. F. Cummins. Report on the Geology and 
Mineral Resources of the Central Mineral Region of Texas, by Theo. B. 
Comstock. Report on the Geology and Mineral Resources of Trans-Pecos 
Texas, by W. H. von Streeruwltz. 
For Review, see Amer. Naturalist, Vol. XXVI, p. 159, Feb., 1892. 
• Noticed in Amer, Jour, of Science, III, Vol. XLII, p. 430, Nov., 1891. 
