150 
Transactions Texas Academy oe Science. 
Hill, Egbert T. 
(upper and lower), with its flints, sponiges, foraminife,rae, and many other 
fossil remains, hitherto not believed to exist in America, together with 
some new stratigraphic horizons. 
^‘3. 'The demonstration of an extensive Mesozoic igneous area in Cen- 
tral Texas now being studied by the State ‘Geologist and the writer. 
“4. The reaffirmation of the age of the Tucumcari section along the 
northwest corner of the Texas to be uppermost Jurassic, as originally 
described by Marcou, and the probable development of an extensive marine 
Jurassic formation in southwest Texas and northern Coahuila and Ohi- 
huahua. 
“5. Innumerable mineralog'ic data by Professor Edgar Everhart and 
others. 
Many questions of undoubted economic importance, such as the devel- 
opment of the Tertiary petroleums of Eastern Texas, the wonderful magne- 
tite iron beds of Llano county; the inexhaustible beds of flint suitable for 
emery and glass making; chalk of 'Commercial value and purity equal to 
that of Erance; kaolins, agricultural marls, Portland cement and other 
valuable products. 
‘7. The scientific classification of the soils of Texas is in progress by 
the writer, and the stratigraphic conditions for determining artesian wells 
are gradually being developed.” 
206. 
The Permian Eoel® of Texas. 
'Science, Vol. XTIT, p. 92. Feb. 1, 1889. 
Attention is here called to the fact that there is in Texas “a great series 
of beds, beginning west of the 97th meridian, and succeeding the 'Carbon- 
iferous; and beneath the undoubted IWealden beds of the Cretaceous a 
great development of strata, the lower half of which cannot po'ssibly 'be 
referred to any other age than the Permian, although the upper portion 
is probably Triassic. Professor Cope has long since described the verte- 
brates of these Permian beds, and the Mollusca, I am informed, are now 
being examined. The stratigraphy, ho'wever, has .as yet only been recon- 
noitered, and no section whatever determined. * * The stratigraphic 
features agreed, as far as could be seen, in nearly every generality with 
those of the Kanab Valley of Utah as described by Mr. C. D. Walcott a few 
years ago in the America7i Journal of Science, and were the direct eastward 
continuation of the same. Not only does this similarity agree with the Per- 
mian beds, but with the upper beds, which he calls Triassic.; This con- 
nects the Grand Canon end Texas-Permian-Triassic basin beyond all doubt: 
and to iMr. Walcott belongs the credit of the first and only intelligible sec- 
tion of the American Permian, a most marked and unmistakable terrane, 
the discovery of which was made, as agreed, by Professor Jules Marcou.” 
207. 
(On the Occurrence of Macraster Texanns.) 
Amer. Xatnralis't, Vel. XXIII, p. 168. Feb., 1889. 
“In the ‘Neues Jah-rbuch fiir Mineralogie, Geologie, and Paleontologie, 
Jahrgang, 1388, I Band, drittes Heft,’ Dr. Ferd. Roemer describes and 
