Foerste — Eocene and Miocene of Georgia and Florida. 51 



ing fossils mostly in the form of casts. Lithologically this 

 rock strongly resembles the upper Yicksburg. It occurs also 

 at locality 14, among the blocks heaped up along the river 

 bank. The situation and lithological character of these blocks 

 seemed to be that of the upper Yicksburg, and the fossils were 

 not satisfactorily identified but seemed to have a Chattahoochee 

 facies. Above this level are a few silicified courses, and then 

 in turn comes a massive bed of a grayish-white rock, quite 

 firm, but readily broken by a hammer, in which occur those 

 fossils which have been recognized at a number of localities as 

 constituting the basal fauna of the Chattahoochee. This bed, 

 which I shall call the Wiley 's Landing -Bed, may have a thick- 

 ness of 20 feet, but at the Landing the actually exposed part 

 hardly rises that far above the river level. Toward the base 

 of this Wiley's Landing bed the rock is brecciatcd, the cracks 

 being filled in with calcite of almost the same color and con- 

 stituency. The coral blocks at locality 19,' although loose in 

 the stream beds, always occurred below this level of brecciation, 

 and so were considered as of a lower horizon. The brecciated 

 rock is as a rule unfossiliferous. It occurs also near the stream 

 leading out of the sink at Steep Head, west of Faceville, 

 northwards towards the Flint River, perhaps an eighth of a 

 mile north of the sink on the west side of the stream. Also at 

 Griffin's Creek, four and a half miles south of Bainbridge. 

 Reasons are given later on for believing that the last locality 

 does not represent the same horizon. 



Chattahoochee bed proper. — Next in order comes the Chatta- 

 hoochee bed, well exposed near the (Old) Chattahoochee Land- 

 ing. This locality represents a southing of about three and a 

 half miles from that of Wiley's Landing. Its main element is 

 a peculiar gray limestone tinged with yellow, soft, friable, 

 readily reduced to powder. At the Landing the fossils 

 occurred chiefly at a level only a few feet above the river 

 level, but the friable rock extends to a height of 30 feet above 

 the river level. Rock of the same lithological character, and 

 having a closely allied fauna occurs about a mile and a half 

 east of the River Junction Bridge (called Chattahoochee Land- 

 ing by W. H. Dall), along the railroad which crosses the river 

 three-fourths of a mile below (Old) Chattahoochee Landing. 

 Here the fossils occur at a higher level than at the Old Land- 

 ing, and it is to be noted that the brecciated bed along the 

 stream leading south from Steep Head, also seems to have a 

 somewhat higher position than would be expected from its 

 position at Wiley's Landing. 



Thickness of Chattahoochee bed proper. — The position of 

 the fossiliferous bed at the Old Chattahoochee Landing is esti- 

 mated as being at least 40 feet above the base of the Chatta- 



