1895.] NATURAL SCIENCES OF PHILADELPHIA. 137 



of 802 feet, but without reaching their base. Three heavy beds of lig- 

 nite aud a number of smaller ones are said to have been passed through 

 in the boring. In Harrison and southward through Panola, Shelby 

 and eastern San Augustine we find these deposits underlying the 

 remuantal Marine beds and passing under the main body of these at 

 many places. Everywhere throughout the Sabine Valley sections 

 showing lignites may be seeu. A section at Robertson's ford shows: 



1. Gray sand 1 foot. 



2. Mottled brown, blue and yellow clay 45 feet. 



3. Lignite 6 " 



4. Dark blue sandy clay to water 3 " 



Near Carter's Ferry, on the same river, we find a deposit of lignite 

 six feet thick containing trunks of trees from sixteen to twenty feet 

 in length aud eighteen to twenty inches in diameter, partly silicified 

 and partly liguitized. These are exposed at low water. Near 

 Logausport a section of the river bluff is reported to give : iy: ' 



1. Gray sandy soil 2 feet. 



2. Mottled yellow and gray clay 10 " 



3. Yellow and blue clay 4 " 



4. Nodular iron ore, nonconformable 1 foot. 



5. Sandy clay 3 feet. 



6. Iron sandstone, irregular 1 foot. 



7. Liguitic shales to water 2 feet. 



Coming westward, the same liguitic sands and clays with more or 



less lignite occur in Smith, Wood, Henderson, Freestone, Limestone, 

 Leon and Robertson counties. Sections typical of the whole region 

 can be obtained almost anywhere. The section of these beds as 

 shown on the Brazos gives : 



I. Calvert Bluff Section : — 



-£ 1. Brown loamy clay 4 feet. 



§ 2. Light brown sand 7 " 



S 3. Brown sand and gravel H " 



4. Gray sand \ to 3 " 



5. Brown coal 12 " 



6. Dark blue clay '. 3 " 



63 Second Annual Report Geol. Survey of Texas, 1890, p. 252. 

 10 



