CHAPTER III
ROBERTSON COUNTY.

GEOGRAPHY AND TOPOGRAPHY.

Geographically, Robertson is one of the great group of central Texas counties; and geologically, it forms part of the western extension of the high, flat-topped, iron ore-capped region of East Texas. The northern boundary is formed by Falls and Limestone counties, the Navasota river extends along the eastern, Brazos county lies across the southern, and the Brazos river forms the western boundary. The whole area is computed at 869 square miles.

The topography is varied. The northern portion is undulating, interspersed with small prairies; considerable areas of mesquite prairie occur along the western side, from near Bremond southward to the neighborhood of Hearne; great stretches of bottom and second bottom lands spread out along the rivers; and the southeastern portion is almost altogether prairie.

The high lands, with flat ore-capped hills occurring in the counties to the eastward, are represented in Robertson by a westward prolongation of high sandy and ferruginous sandstone ridges, which enter from Leon on the east and stretch in a general southwest direction across the county, at an ever decreasing elevation, until they end in a series of small, isolated bluffs along the eastern side of the Little Brazos river. Throughout these ridges the iron ore of the eastern counties is replaced by a coarse-grained conglomeritic ferruginous sandstone.

The general elevation of the county is approximately 400 feet above sea level. Some portions reach an altitude of 450 and 470 feet, but the greater part lies much lower. The elevations of the principal points are: