382 GEOLOGY OF NORTHWESTERN TEXAS. 



1. Shaly limestone in several beds, fossiliferous 3 feet. 



2. Yellow clay 4 feet. 



3. "Limestone 10 inches. 



4. Clay '. 6 feet. 



5. Limestone, shaly at base, weathering in rounded masses at top. ... 4 feet. 



6. Clay 10 feet. 



7. Limestone in beds 6 feet. 



8. Clay 2 feet. 



9. Limestone, with Nautilus and Orthoceras 1 foot 6 inches. 



10. Clay 10 feet. 



11. Limestones with iron seams 3 feet. 



Total 50 feet 4 inches. 



The following fossils were found in No. 1 of the above section : Productus 



semireticulatus, Martin ; Myalina subquadrata, Shumard ; Pinna peracuta, Shu- 

 mard; Euomphalus pentagulatus? ; Nautilus?. 



SECTION NO. 29, ALBANY DIVISION. 



One and a half miles southeast of Section 28. The top of this section begins 

 about twenty feet below the base of the previous section. 



1 . Hard limestone 1 foot 6 inches. 



2. Yellow clay 10 feet. 



3. Yellow limestone, weathered into holes . . ... 13 feet. 



4. Yellow clay 4 feet. 



5. Limestone, fossiliferous . 6 inches. 



6. Yellow clay 20 feet. 



7. Limestone, Nautilus? 



Total 49 feet. 



In the limestone of No. 5 of the above section I recognized Nuculana bel- 

 listriata, Stevens. 



SECTION NO. 30, ALBANY DIVISION. 



At the north line of Section No. 5, made for Buffalo Bayou, Brazos and 

 Colorado Railway Company and about five miles southeast of the previous 

 section : 



1. Limestones with beds of yellow clay 20 feet. 



2. Yellow clay 10 feet. 



3* Limestone 2 feet. 



4. Yellowish clay .* 4 feet. 



5. Limestone 2 feet. 



6. Yellow clay 20 feet. 



7. Limestone 3 feet. 



8. Limestone 2 feet. 



9. Limestone * 1 foot 6 inches. 



Total 64 feet 6 inches. 



