84 
Transactions Texas Academy of Science. 
Dumble, Edwin T. 
try of 100 -miles Dia,meter. Average Annual Rainfall by Months. Normal 
Average Temperature in West Texas.) iReport of 'Geologist for Northern 
Texas by W. F. Cummins. Report of -Geologist for Eastern Texas by R. 
A. F. Penrose, Jr. Reports of Geologists for 'Southern Texas: (1) by 
Gustav Jermy, (2) by J. L. -Tait, (3) by J. lOwen. Economic Minerals 
of San Saba County, by A. Gregg, M. D. 
117. 
First Eeport of Progress. 
Texas Geological and Mineralogical Snrve^^ First Eeport of 
Progress^ 1888, pp. 7-30; 9 cuts. 1889. 
Appointments. Circulars 1 and 2 relating to the work of the Survey: 
'Circular 3 requesting information and specimens. Office Work. Topo- 
graphic Work. Meteorological Work. Chemical Work. Reports of Geol- 
ogists. Mining Law. Irrigation. Responses to Circulars : Artesian 
Wells, Asphaltum, Building Stones, Bat Caves, Clays, Coal, Gypsum, Pre- 
cious Metals, Iron, Irrigation, Mineral Waters, Natural Gas, Petroleum, 
iSalt, Soils. Coal: -The Central Coal Field — ^Bituminous, The Nueces Coal 
Field — ^Semi-Bituminous, The Lignite Field. Artesian Waters: Condi- 
tions of Artesian Wells, Essential Features of Artesian Wells, The Water- 
Bearing Beds, The Confining Beds, The Inclination of the Beds, The 
Reservoir or Fountain Head, The Collecting Area, Rainfall. Drouths. 
Conclusion. 
118. ^ 
Art. Coal. Min. Eesourocs o'f the IT. S. 1888. 
(Coal in Texas), pp. 368-374. Washington, 1890. 
‘‘There are in Texas three distinct coal fields, the Central -or Bituminous, 
the Nueces or >Semi-Bituminous, and the Lignitic. 
“The Central co-al. is a continuation of the Missourian or Western coal 
-basin of the United States, of which it is the southern -extremity. Its 
approximate ‘boundary is a line from -the eastern corner of Montague 
county, running -southwest from Red river just west of Decatur and 
Weatherford, through Palo Pinto county, to the eastern line of Brown 
county, and from this point through Lampasas into Burnet county, where 
it terminates. 'It appears again in Kimble and Mason counties, and the 
line running north passes -through Menard, Concho, Runnels, Taylor, 
Callahan, Shackelford, and Throckmorton counties, through the s-outheast- 
er-n portions of Archer and Clay counties to the anoutli -of the Little 
Wichita. This (field covers in whole or in part some twenty-five counties 
and has an area of not less than 12,000 square miles. -Its eastern border 
is -overlaid by the rocks of -the CretaceouiS formation, while the Permian 
beds rest upo-n it on the west. The sectio-n made by Professor Cummins 
■shoiws the thicknes-s of the formation to be not- less than 2,000 feet, with 
nine -seams of coal, of which two at least, and probably three, are w-orka- 
ble.’’ P. 368. 
“The Nueces or Semi-Bituminous coal field includes parts of -Webb, 
Dimmit, Zavala, and Maverick counties, and has an area of 3,700 square 
