*|5'.), 60] SILICEOUS SANDSTONE — CLAYS. 33 



seen all over W. Tippah, and the adjoining portions of Marshall, 

 Lafayette and Pontotoc. Near Rocky Ford, in the latter county, 

 there is a large, continuous deposit of this rock, which strews the 

 hillsides in large slabs, and blocks of considerable size — sometimes 

 10 feet in diameter. It is somewhat variable in its character — 

 mostly hard, but workable : sometimes quite soft. It is found, N. 

 of the Tallahatchie, between Catalfa and Tallaquamanola Creeks, 

 for about 2 miles from the river ; and\ southward of the same, 

 around Rocky Ford, for about | mile. Large quantities of fine 

 building stone could be readily obtained here, by simply prying 

 the blocks out of the soil. 



59. A small deposit occurs at Mr. Powell's place. 5 miles from 

 Oxford, on the Water Valley road. Good sized blocks for foun- 

 dations can be obtained here. Another locality, both of white and 

 ;: black" sandstone exists, according to L. Harper, on S. 28, T. 8, R. 

 7 W., Panola county ; and according to the same, a ledge of this 

 rock, 4 feet in thickness and of great hardness, occurs in a hill on 

 the Yockeney River, on S. 26, T. 10, R. 8 W. In Yallabusha 

 county the white sandstone occurs in considerable force, at, and near 

 Mr. Pearson's place, on SS. 3 and 4, T. 25, R. 6 E. Some of the rock 

 here, also, is of excessive hardness, so as to be suitable only for 

 rough masonry. Near Grenada this rock is found capping a hill. 

 It is also found, in limited deposits, at several points in N. Calhoun ; 

 e. g. near Concord P. 0. ; and in considerable abundance, on S. 4, 

 T. 25, R. 8 E. 



N. Holmes and N. Attala are, probably, the region where the 

 deposits of this rock are most abundant ; on the ridges N. and N. 

 E. of Burkettsville, they prevail more generally than the brown 

 sandstone itself ; here also, it is often excessively hard. Near 

 Rockport, and between that place and Durant Station, the white 

 cherty sandstone is frequently exhibited in the R. R. cuts ; as in 

 many other places, it occurs here in disjointed, irregularly shaped 

 blocks, rather than in solid strata, and imbedded in the sand of the 

 Orange Sand Group. 



I do not know of any deposits of this rock, S. of Attala county. 



60. Clays. — Numerous varieties of useful clays occur in the 

 Orange Sand formation ; among these the following deserve 

 especial mention : 



White Pipeclay. — It is widely distributed in the formation, but 

 R— 3 



