﻿4 Bulletin 16 4 



Bulletin 15, p. 42. This we determined several years ago (See 

 Amer. Geol., vol. 18, 1896, p. 236). We now have good Oligocene 

 collections from Cuthbert, Dawson, Smithville, Americus, Ander- 

 sonville, and even Rich Hill, north of Fort Valley and east of 

 Roberta. Perry, Haynesville and Hawkinsville are all Oligocene 

 localities. 



On the east side of the Ocmulgee, however, along the railway 

 leading back to Macon, imperfect specimens indicate a Lower 

 Claiborne horizon, for the lower country at least. 



Recent Investigations. 



Lower Claiborne. 



Griswold. — About a year ago, while on our way to take 

 charge of geological work in Louisiana, we collected at some fine 

 fossiliferous localities of this horizon in the vicinity of Griswold, 

 and heard of several others in the same general region but had no 

 time to inspect them. This outcrop is in a V-shaped valley about 

 two miles south of Griswold or about 10 miles east of Macon. 

 The Lower Claiborne rock consists of a hard bed of the typical 

 "buhrstone," of former geological works, about 10 feet in thick- 

 ness, replete with fossil remains. In less indurated, or in sandy 

 seams, and just below the main bed many fine specimens of 

 silicified shells were collected. Sandy beds were noted below the 

 above-mentioned hard layer for a distance of 40 feet. Above, 

 and between this outcrop and the station, red sandy hills rise to 

 the height of 140 feet above the fossiliferous bed or above the 

 station, the latter two points being upon about the same level. 

 Near the station were noted red sands mottled with white clay. 

 One mile west of Griswold extensive white clay deposits were 

 found along the line of the railway leading to Macon. 



Lignitic. 



Woods Bluff Beds. 



Roberts. — It is, however, to the interesting outcrop near the 

 little station on the railway leading from Maeon to Milledgeville, 

 about seven miles in an easterly direction from Macon that we 

 would call special attention in the present paper. 



The exact locality is one mile east of the station in a railwa)' 

 cut about 30 feet deep. The light gra3' sandy clays in the lower 



