Record of Geology of Texas, 1887-1896. 
241 
Taff 
387. 
388. 
, J. A. 
tions. Bosque and Associated Rocks at St. Joe, Montague County. Tke 
Bosque Division and Associated Rocks west of the Main Cretaceous Bor- 
der. Correlation of the Trinity, Glen Rose and Paluxy Beds. 
Part II. The Lampasas^Williamson Section — Introduction. Strati- 
graphical Geology. Carboniferous Basin at Lampasas. Topography of the 
Paleozoic Floor West of Lampasas. Hydrography. Bosque Division: 
Trinity Sand. Glen Rose (Alternating) Beds. Paluxy Sand. Fredericks- 
burg Division : Texana Limestone. Comanche Peak Limestone. Caprina 
Limestone. Flag Limestone. Austin Marble. Kiamitia Clay. Washita 
Division: Fort Worth Limestone. Arietina Clay. Vola Limestone. 
Upper Cretaceous Series: Red River (Lower Cross Timbers) Division. 
Eagle Ford Shales. Austin Limestone. Blue (Ponderosa) Alarl. Colum- 
nar Sections. Post-iCretaceous Deposits — Drift of the High Land. Second 
Bottoms. Economic Geology — Artesian Water. Soils. 
Mr. Taffs Reply to Prof. Hill. 
Correspondence. 
Amer. Geologist, Yol. XI, pp. 128-130. Minneapolis, Feb., 
1893. 
Mr. Taff here makes a brief reply to that part of Professor Hill’s criti- 
cism of the Third Texas Report relating to his work (Amer. Geol., X, 
394) in which he explains why he employs the term ^‘Bosque” instead of 
“Trinity,” accounts for the similarity between his classification of the 
“Comanche Series” and that of Professor Hill, and points out the fact 
that there is a line of demarkation between the Denison and Arietina beds, 
“as shown by fauna as well as by the strata themselves.” 
, and Leverett, S., Assistant. 
Report on the Cretaceous Area north of the Colorado River. 
Fourth Ann. Rept. of the Geol. Surv. of Texas, 1892, Pt. I, 
pp. 239-354. 1 cut; 4 plates; 2 maps. Austin, 1893. 
Contents: Introduction. Chapter I. Fredericksburg Division; Texana 
Limestone; Cleburne Section, Fort Worth Section. Comanche Peak and 
Caprina Limestone. Kiamitia Clay; Fauna of the Kiamitia Clay. 
Chapter II. Washita Division: Fort Worth Limestone and Denison 
Marls; Exogyra Arietina and Vola Subdivision, Vola (Shoal Creek) 
Limestone. 
Chapter III. Upper Cretaceous Series: Dakota (Lower Cross Tim- 
bers) Formation; Area of Outcrop; Timber Creek Beds; Dakota Forma- 
tion North of the Denton Section. 
Chapter IV. Eagle Ford Formation: Waco Section. 
Chapter V. Austin Limestone Formation: Waco Section; Fort Worth 
Section; Cleburne Section. 
Chapter VI. Artesian Water: Catchment Area and Water-bearing 
Strata. Outline of the Area which will produce Flowing Wells. Lines 
showing Well Depth. Structure and Position of the Different Rock Sheets 
