78 GULF TERTIARY OF TEXAS. 



1. Buff colored sand 1 to 15 feet. 



2. Brown rusty ore •£ to 1 foot. 



3. Yellow and buff sand 20 feet. 



4. Main ore bed 10 feet. 



Johnson's Hill is about three miles north of Lasater Station, and forms 

 part of the divide between the waters of the Big Cypress and the Black Cy- 

 press rivers. It is about three miles long from north northeast to south 

 southwest, and a mile wide. It looms up as a flat-topped plateau, and its 

 surface is capped with masses of ore broken from the underlying bed. The 

 capping of sand is here often entirely absent, a fact that is most important in 

 facilitating the mining of the ore. A section of the ore bed on this hill shows 

 the following strata: 



1. Ore bed, stratified and in geodes, brown and black, bed much broken, inter- 



bedded with seams of sand 4 to 10 feet. 



2. Ferruginous and mottled clays 3 feet. 



3. Ore, similar to the stratified part of 1 4 to f foot. 



4. Interbedded ferruginous sands and clays 20 feet. 



5. Mottled red and white sandy clays 10 feet. 



6. Red ferruginous sandy clays 65 feet. 



Continuing northwest into the southwest part of Cass County, we come to 

 Barnes' Hill, six miles northwest of Johnson's Hill, and three miles from 

 Avinger, a station on the Missouri, Kansas and Texas Railroad. Here ore is 

 found in very large quantities, and directly on the hill top. Large loose 

 masses cover the surface as on Johnson's Hill, often in such quantities as to 

 impede travel. 



To the north of this is situated the old Nash furnace, built before the Civil 

 War, but now abandoned. 



Berry Hill is seven miles north of Jefferson. It is a broad plateau, com- 

 prising some four thousand acres, a large part of which is underlaid by iron 

 ore. The following section shows the general mode of occurrence of the ore : 



1. Red sandy clay, with seams of hard-pan, and rounded ore pebbles J to 2 inches 



in diameter 2 feet. 



2. Mottled sandy clay, with same pebbles as 1 5 feet. 



3. Interbedded seams of iron ore and hard-pan 15 feet. 



4. Mottled red and white sandy clay 10 feet. 



Bed No. 4 runs to the foot of the hill and becomes covered by drift sand 

 in the bottom of a creek, so that only ten feet of it can be seen. The iron ore 

 in the above section is a brittle, stratified brown hematite. On a hill to the 

 north of this exposure was seen a bed of conglomerate ore from one to two 

 feet thick. Going east from here, similar ores are seen near Linden, Atlanta, 

 Springdale, and other places. Near Springdale is a high hill, rising 512 feet 



