I'io , 191 



CLAIBORNE STRATA IX NORTH CLARKE 



125 



: in this was found the supposed ovarium of a Fyrula (L. Harper's Rep., 

 p. 149). Further S., however, wu find intervening between this clay and the 

 chert or claystone, with a rapidly increasing thickness and strong dip south- 

 ward, a stratum of coarse greenish sand, whose grains consist mainly of 

 chalcedony, and some greensand grains (see above). At this point, the stratum 

 contains no fossils ; it ma) 7 be traced, however, thence to Enterprise, where wc 

 find it in the banks of the Chickasawhay River, partly cemented by lime and 

 teeming with fossils — chiefly Ostrea divaricata, Cardium Nicollcli, Venericardia 

 rotunda, Pecti n Lyelli, and Scutella — and strongly glauconitic. The greenish 

 clay found underlying it at the R. R. cut, is also present — as shown in the 

 wing section : 





(Sec. 24.) 



I m\ OF TERTIARY STRATA ON THE CHICKASAWHAY. 

 ENTERPRISE, CLARKE COUNTY. 



A.T 



Bed No. 3 of this section is also seen in a branch W. of Enterprise, filled with 

 Mortonia, and a similar one appears in Chunkey Creek, above Chur.keyville. 



190^ I have mentioned above (if 187) the yellow aluminous sandstone of S. 

 Neshoba. It is very poor in fossils at its northern edge, but becomes richer as 

 we advance southward. The following shells occur in specimens derived from a 

 locality near the S. line of Neshoba, on the Philadelphia and Enterprise road. 



[enericurdiaplanicosta, Venericardia rotunda, Lea. 



\olutapelrosa, Coy. Corbula gibbosa, Lea ? 



A Turritella — shell smooth, and remarkable for the small angle formed by 

 the sides of its spire. 



The rock is sometimes of a uniform yellow tint, but more generally spotted 

 with blue, and contains galls of indurate clay, like the sandstone of N. Tippah 

 (IT 162 tf, 168). 



It occurs likewise in N. Newton, but I have no personal knowledge of its 

 character there. There are several cuts of the Southern R. R. in this county, 

 which from the accounts of the engineers must be highly interesting and instruc- 

 tive, and contain fossilifercus rocks ; I have not as yet had an opportunity of 

 examining them. 



191. Beds intervening betiveni the siliceous and the calcareous Claiborne strata. 

 — I have not as yet been able to trace along the Chickasawhay river, the precise 

 1 tionofthe strata seen at Enterprise (the first in which carbonate of lime 



