54 GUIDEBOOK OF THE WESTERN UNITED STATES 
Through Weimar and Schulenburg and halfway to Engle siding 
the rolling surface of the Lagarto clay is traversed, but about Weimar 
there is an extensive flat or terrace. Good outcrops 
are rare, especially near the railroad, but there are 
shallow cuts in the western part of Weimar and there 
are exposures at intervals along the streams, espe- 
cially in some of the bends of the Colorado River. A large part of 
the area is covered by soil and part is woodland. Remains of 
the 3-toed horse, Protohippus perditus, and other bones were 
found in the Lagarto formation at Dripping Springs, 114 miles north- 
east of Borden siding. Shells derived from underlying Cretaceous 
formations and minute Foraminifera have been noted. 
At Shatto siding the railroad crosses the east branch of the Navidad 
River, which heads in the low ridges north of Schulenburg but de- 
velops into a drainageway of considerable size in the region farther 
south. 
Schulenburg is a rural center for a prosperous agricultural district. 
airying is a thriving industry, and some of its products are utilized 
at a large plant making evaporated milk, on the west- 
Weimar. 
Elevation 410 feet. 
Population 1,256. 
ew Orleans 463 miles. 
Schulenburg. = ern edge of the town. Near by is a mill which pro- 
Elevation 345 feet. duces a nonstarchy flour from cottonseed. Just west 
Population 1, = 
Sia @ricans ne mils. Of Schulenburg are cuts in light-colored sandstone, 
and near by are ledges of this rock. These beds dip 
east and are in the lower part of the Lagarto clay. The general dip 
of the strata in this region is considerably less than 1°, which is near! y 
90 feet to the mile. 
Two miles west of Schulenburg the west branch of the Navidad 
River is crossed, and thence there is a long gentle upgrade that extends 
nearly to Flatonia. In this interval the Oakville and Catahoula 
sandstones appear, rising on a dip which is low in angle but steeper 
than the rise of the land. Both of these sandstones present low ridges 
and knobs, so that the country has a diversified topography, and as 
the soil is not very fertile much of the land remains wooded. 
The contact between the Lagarto clay and the Oakville sandstone *® 
_ is passed just beyond the west branch of the N avidad, whence the 
railroad follows the low divide between Rock Creek and Mulberry 
Creek. 
% The Oakville sandstone is charac- 
teristically a massive light-gray or 
yellow rock, in ross-bedded, in 
all about 300 feet thick and dipping to 
the southeast at the rate of about 40 
feet to the mile. It is held together 
loosely by a caleareous cement, com- 
monly crystalline, or, more rarely, it 
er 
angular. Light-colored greenish or 
yellowish limy clays make up an 
appreciable part of the upper Oakville 
section, closely resembling in appear- 
ance some of the Lagarto clays. For 
this reason, the Oakville-Lagarto con- 
tact is less obvious than might be 
from the characteristic ma- 
expected 
| terials of the two formations. How- 
ever, volcanic ash, both in its original 
