248 
Transactions Texas Academy of Science. 
Taer, Ralph S. 
Lithological character of the strata: beds of clay, sandstone, and con- 
glomerate, of red color, pale gray lime&tone, gypsum, and salt. “Most of 
the beds are unfossiliferous, hut 'Dr. White has described thirty-two species 
of invertebrate fossils from the Texas Permian, and Prof. Cope >fifty-seven 
species of vertebrates. It is upon this basis that the beds have been 
referred to the Permian.’’ P. 9. 
The object of this paper is “to indicate the sequence of events which 
iiave led to deposition of the Permian beds in this district.” Pp. 9-10. 
397. — 
Reconnoissance of the Guadalotipe Mountains. 
Geoh Surv. of Texas. Rullietin Fo. 3, pp. 42. Austin, 1892. 
Contents : Letter of Transmittal. Preface. Introductory : General 
.Statement; Previous work in the Guadaloupe Mountains. 
Part I. iReconnoissance Section across the Permian of Central Texas: 
iCretaceous Areas; Cretaceous near Marienfield; Carboniferous; Transi- 
tion from Carboniferous to Permian; Typical 'Permian; Doubtful Beds 
near Westbrooke; Erosion at south border of Llano Estacado; Probable 
Permian near Pecos City. 
Part II. Geology of the Guadaloupe 'Mountains: General Statement. 
Topographic Features of the Guadaloupe Region: Dark Canyon; Black 
River; McKitterick Canyon; Pine Canyon; Drainage on west .side of the 
Guadaloupe Mountains ; Dog Canyon; Crow Flat Valley; Springs supplied 
from the Mountains. Stratigraphy of the Guadaloupe Mountains : Possi- 
ble CoTrelation; Age of fthe Strata; Monoclinal Structure; Probable 
Fault; Disturbance; Pre-Cretaceous Ero.sion; Quaternary Rocks. 
Part III. Economics of the Guadaloupe Mountains: Artesian Water; 
Building Stones; Minerals; Coal. Index. 
“The object of this work was to determine the age of the Guadaloupe 
.mountains, their geological structure and relation to the strata east of the 
mountains 'with particular reference to the artesian water supply of the 
Plains, and the prospects of the district for coal and other minerals. Cir- 
cums'tances prevented the completion of these plans and consequently the 
work was done in much less detail than was at first intended. Instead of 
four .months, as was first planned, .only two months were spent in the 
(field and less than one month in the mountains. Furthermore, there being 
no topographic map of the region, and it being impossible to make detailed 
observations in consequence, the work has necessarily been general rather 
than of a detailed nature. For these reasons this report is no more than 
a reconnoissance. Still, it has been possible to add something to the 
knowledge of this region, both of the geology and the economic resources 
as revealed by the geology.” P. 9. 
398. 
The Cretuceous. Coverings of the Texas Paleozoic. 
Amer. Geologist, Vol. IX, pp. 1G9-178. Minneapolis, March, 
1892. 
