152 
Transactions Texas Academy of Science. 
Hill^ Egbert T. 
dition of knowledge previous to .tliut time was fully set forth in this jour- 
nal for October, 1887. Trom later investigations I am able to present the 
following brief .sketch of the principal historical events 'recorded in their 
formations, and also a preliminary section which approximately outlines 
the Oretaeeous history of the United States east of the .Sierras.” Pp. 
282-283. 
210 . 
A Review of 
^^Ueber eine diircli die Hiiiifigkeit Hippiiriteiiartiger Cliamiden 
ausgezeichnete Fauna der obertiironen-Kreide von Texas, von 
Ferdinand Eoemer in Breslan.^’ Faleontologiscbe Abbandlun- 
gen, Vierter Band, Heft 4. Berlin, 1888. 
Amer. Jenr. of Science, III, Vol. XXXYII, pp. 318-319. 
'New Haven, Apr., 1889. 
In Roomer’s paper an interesting fauna from 'Barton’s Creek, a locality 
near Austin, is described, embracing twenty-one 'Species, of which eighteen 
are considered new. 
“As the reviewer has made a special study of the faunal and strati- 
grajihic Irorizons of these fossils, he would here correct one or two mis- 
takes in the o.therwise excellent puhlijcation. Instead of being from the 
Austin Chalk of 'Shumard (Niobrara of M. and H.), as the author asserts, 
all of these forms came from an entirely different and lower horizon, sepa- 
rated by four distinct subfaunas, u complete stratigraphic and paleontologic 
non-confoinmity, and four hundred feet of strata below that fiorizon, and 
hence the deductions and correlations of Dr. Boemer are unfounded.” 
The species described are considered as belonging to non-criterional 
genera, and the conclusion advanced is that “Dr. Roemer’s assignment of 
this fauna to the Upper Turonian horizon is not based upon sufficient evi- 
dence either stratigraphical or paleontolo'gical. They belong to the Hip- 
purites Limestone of 'Shumard, whose stratigraphical place as given in 
my section is in the middle of the Lower American Cretaceous.” 
A Portion of the Geologic Story of the Colorado River of Texas. 
Amer. Geologist, Vol. Ill, pp. 287-299. Minneapolis, May, 
1889. 
Contents : Introduction. The Section. Unconformities and Disturbance. 
The Devonian, Disturbances closing the Paleozoic. The 'Early Alesozoic 
iITiatus. (The Cretaceous History. The Upper Cretaceous- Formation. The 
Tertiary. iTlie Quaternary. Ancient River Terraces. ^ Disturbances in the 
C r e t a ce ou s F o r m at iion s 
This paper deals with the geological phenomena seen along the course 
of the Colorado river from the vicinity of Sand Mountain, in Llano county, 
to Austin, in Travis county. The formations exposed range from the 
Llano Croup of Walcott to the Quaternary, and have an estimated thick- 
ness of 9,520 feet, 
