566 A. F. FOERSTE 



the name Dixo?i clay is given. This clay has so far proved com- 

 paratively unfossiliferous, Fistulipora {Thecostegites) hemispherica 

 being the only fossil so far found in abundance. Above the Dixon 

 red clay is a section of white limestones and clays, exceeding lOO 

 feet in thickness. This section is often richly fossiliferous and 

 contains the fauna studied by Roemer during his three weeks 

 visit to Decatur county, Tennessee. To this section overlying 

 the Dixon red clay, the name Brownsport bed is here given. 



Lithologically, the limestones forming the middle and lower 

 part of the Lego bed often resemble those forming the Laurel 

 bed so much that, in the failure to identify the Waldron horizon, 

 it is impossible to distinguish the same. In that case, the name 

 Glenkirk limestotie may be used to designate the combined Laurel- 

 Lego section. 



5. New Era, Glenkirk, Clifton, Cerro Gordo, Paulks, Sulphur 

 Spring, Martitis mill, Rise mill, Pegram. — At New Era, along the 

 road leading eastward from the landing, the Waldron bed is over- 

 laid by whitish limestone, 22 feet thick, followed by alternating 

 layers of whitish and reddish limestones, 10 feet thick; a total 

 of 32 feet, referred to the Lego bed. The Dixon red clay bed 

 is 37 feet thick, and consists of partly indurated, dark brick-red 

 clay. The base of the Brownsport bed is formed by a layer of 

 white clay, 2 feet thick. The nearest post-of^ce is at Lego, 

 about a mile and a half up the river. 



At Glenkirk, the Waldron bed is overlaid by a layer of mas- 

 sive limestone, 3^ feet thick; bedded limestone, 12^ feet 

 thick; a reddish clayey layer, y^ foot thick; rubble and solid 

 limestone, 21^ feet; a total of 36 feet, referred to the Lego bed. 

 The Dixon red clay is 22y^ feet thick, and is overlaid by the 

 white clay layer forming the base of the Brownsport bed. 



Along the slope of the hill back of Clifton, north of the road 

 to Waynesboro, the Dixon red clay bed was estimated to have a 

 thickness of 44 feet. 



About a third of a mile above the old cement mill at Clifton, 

 along the river bank, the Waldron bed is overlaid by crackled 

 limestone, 3 1 ^ feet thick, followed by similar limestone including 

 layers of reddish clayey rock, 14^ feet thick, a total of 46 feet. 



