Record oe Geology ofjTexas, ISS1-IS96. 
33 
Clark, William Bullock. 
Hilli Clk., LA.ustin Chalk, p. 50 ; Goniopygus Zitteli Clk., Caprina Lime- 
stone, p. 53; Pedinopsis Pondi Clk., Austin Chalk? p. 57; Holectypus pla- 
natus Roemer, Washita iFormation, p. 58; Pyrina Parryi Hall, Washita 
Formation, p. 59 ; Echinohrissus Texanus Clk., Austin Chalk, p. 62 ; Holas- 
ter simjjlex Shumard, Washita Formation, p. 76; Enallaster Texanus 
(Roemer), Frederickshurg Formation, p. 78; Enallaster ohloquatus Clk., 
Frederiokshurg, p. 79; Epiaster elegans (’Shumard), Washita Formation, 
p. 80;- Epiaster Whitei Clk., Washita Formation, p. 82; Hemiaster Tex- 
anus Roemer, Austin Chalk, p. 86; Hemiaster Dalli Clk., Washita Forma- 
tion, p. 89; Hemiaster Calvini Clk., /Shoal Creek Limestone, p. 90; ? Holec- 
typus simplex Shumard. Meek includes this species in his list of Creta- 
ceous Echinodermata, giving Texas as the locality. His reference to this 
species is probably an error. P. 93. 
24. Comstock, Theo. B. 
The Geological Burvey of Texas. 
Engineering and Mining Journal, Vol. XLIX, pp. 384-386, 
Xew York, Apr. 5, 1890. 
“There have been three distinct periods of popular interest in the dis- 
covery and development of the mineral resources of Texas.” The Shumard 
(B. F.) 'Survey in 1858. The Survey of 1870. The present (3d) Survey 
under the direction of E. T. Humble. Personnel of the (Survey. Areas 
assigned the different geologists. Announcement of facts concerning the 
economic resources thus far discovered. 1. Precious Metals. 2. Copper. 
3. Lead. 4. Iron. Analyses of Magnetites, Hematites and Limonites. 
5. Manganese. 6. Zinc, Tin, etc. 7. Rare Metals — iGradolinite. 
Report of. First Ann. Rept. Geol. Snrv. of Texas, 1889, pp. 
Ixxxviii-xc. Austin, 1890. ' / 
Administrative Report of the Geologist for Central Texas. Plans of 
field work for 1889; personnel of parties; topographic work of. Mr. J. C. 
Nagle; acknowledginents. 
26. 
A Preliminary Report on the Geology of the Central Mineral Re- 
gion of Texas. 
First Ann. Rept. of the Geol. Surv. of Texas, 1889, pp. 237- 
391; 3 ills.; 1 pi. Austin, 1890. 
Contents: • Introduction. Pt. I. •Stratigraphic Geology. Archaean 
group.. Burnetan system. Fernandan system. Eparchaean group, 
classification of Pre-Paleozoic Igneous rocks. Paleozoic group. 
The Cambrian system. The 'Silurian system. The Niagara (Upper Silu- 
rian) system. The Devonian system. Post-Paleozoic uplifts. The Pre- 
Cretaceous movement. The Post-Cretaceous deposits. Relations of the 
Wichita Mountains to the Central Paleozoic area. Part II. Economic 
Geology. Precious Metals. Base Metals. Manganese Ores. The Iron 
