HARRISON COUNTY. 153 



tions, taken at the various places of exposure, show the greensands to have a 

 thickness of at least twenty feet in some places. 



At 'Squire Lynch's house, on the southwest side of the W. C. Crawford 

 headright, there is an exposure of a pinkish brown indurated sandy clay, 

 having numerous rounded and oval white colored spots. This pinkish brown 

 color gradually fades to a pale yellowish brown, still retaining the white or 

 gray spots, and the whole is pervaded by a light greenish shade. 



On the W. C. Allan headright this same greenish hued brown or yellow 

 colored indurated sand appears in a section of the bluff. (See Nos. 5, 6, 

 and 7 of section on page 121.) 



About two and a half miles southeast of Marshall, on the Elysian Fields 

 road, there is a deposit of a clayey sand of a greenish brown or yellow un- 

 stratified appearance, having numerous oval shaped and rounded gray or 

 grayish white colored spots, and having a tendency to glaze upon exposure. 

 This deposit is also indurated through the action of the weather. It takes 

 the place of the dark blue clay No. 4, of section III, on page 121, and is about 

 twenty feet thick. 



Another deposit of this green colored sand occurs in the cutting on the 

 Texas and Pacific Railway on the Daniel McG-ray headright. This sand, 

 No. 4 of section on page 150, is a grayish green black specked sand, show- 

 ing sixteen inches in thickness in the cut. 



The value of these greensands, from an agricultural point of view, depends 

 upon their qualifications as a fertilizer, and that largely upon the quantity of 

 phosphoric acid, carbonate of lime, or potash these sands may contain. 



The soils of Harrison County are chiefly sand, and are rapidly becoming 

 exhausted of all their agricultural qualifications. This is noticeable in great 

 numbers of "old fields" at present out of cultivation and being allowed to 

 grow up in young pine, and also in the ever increasing acreage of lands an- 

 nually being abandoned. 



LIGNITE. 



The semi-lunar region of gray sands lying along the Sabine River, extending 

 across the eastern side of the county and along the Caddo Lake and Cypress 

 Bayou towards Jefferson, is generally underlaid by beds or deposits of lignite 

 of varying qualities, extent, and thickness. As a general thing these deposits 

 are thicker toward the southern side of the county than toward the north, 

 and as far as could be judged from the well borings in which lignite occurs, 

 the deposit thins out towards the western margin of the gray sand area. 

 These deposits are also, from the same data, irregular in their distribution, 

 and are altogether absent in some localities. 



Lignite appears at several places along the Sabine River in thicknesses of 



