168 
Transactions Texas Academy op Science. 
Hill, Egbert T. 
acter of the iBasins; The Hueco-'Or.gaii Basin; The Mesilla Basin; The 
Jornado del iMuenbo Basin; The Eagle Elats Basin; Valley of the Salt 
Lake Basin; Basin Mlmbres. Probable Basins of the Peeos Valley. .The 
Volcanic Areas of eastern (New Mexico. 
‘The present paper is intended to call attention to certain widely dis- 
tributed features of the western Texas and eastern New Mexican region 
not hitherto described. The region treated embraces the country west of 
the longitude and south of the latitude of the Ouchiba mountains (approx- 
imately corresponding with the thirty- fourth parallel). The features dis- 
cussed are mostly non-mountainoujSj and of later age (Neocene) than the 
latest mounibain uplifts.’’ P. 85. 
2A1. 
The Goal Fields of Texas. 
Mineral Eesoiirces of the IT. S., 1891, pp. 326-328. Washing- 
ton, 1893. 
"^Eeprint, Manufacturers^ Eecord, Baltimore, Jan. 13, 1893. 
1. The Carboniferous coals of the ’Central Texas region. Outcrops of 
Coal Measures.. The northernmost area. Counties. The southernmost 
area. Counties. The Texas area not .a portion of the Missourian coal 
field. Extent of Texas coal field first made known by Dr. B. F. Shumard. 
iStratigraphy and succession of beds in the Brazos coal field published by 
Dr. C. A. Ashburner in tlie Trans, of the Amer. Inst, of Mining Engineers. 
2. 'Cretaceous and Laramie coal field. Eagle Pass coal. Resemblance 
to coals of the 'Rocky Mountain region, 
3. The Lignite beds of Texas. The chief deposits coincident with the 
Eocene Tertiary formation. Its general extent first outlined by Dr. B. F. 
iS’humard. Dr. R. A. F. Penrose quoted on the “'San Toma(S coal mine” 
and the “Uses of lignite.” 
Art. (Olay Materials of the United States. Min. Eesoiirces of 
the United States. 1891. 
Flints from the 'Chalk Formations (of Texas), pp. 50'0-501. 
Washington, 1893. 
iSegregations of black flint nodules in the “iCaprina limestone” of Texas. 
Limestone with flints occur extensively 'throughout Central Texas. Coun- 
ties enumerated. Most accessible lO'Califey in the west part of 'Austin on the 
Colorado, and in the numerous limestone quarries of this locality. Hun- 
dreds of tons of flint from the waste product. Importation and use of 
flint in clay grinding and porcelain manufacture. 
243. 
Art. Ulay Materials of the United States. Min. Eesoiirces of 
the U. S. 4891. 
(Clay Materials of Texas), pp. 518-5'22. Washington; 1893, 
