90 



a first-rate marble, inasmuch as it takes a good polish and shows 

 agreeable variations in color. The soft chimney rock underlies 

 the hard limestone here as at other points. 



At Choctaw Bluff, some miles below Gainestown, there is the 

 last exposure of the Tertiary limestones on the river. The ma- 

 terial is an argillaceous limestone with numerous fossils, but it 

 seems hardly likely to be of use in cement making. 



Between Alabama River and the main line of the Louisville 

 and Nashville Railroad. A few miles east of Marshall's Land- 

 ing, at Manistee Mills, the terminus of a sawmill road, there is 

 a quarry of the chimney rock, conveniently situated as to trans- 

 portation, since it is on the railroad. Across the country to the 

 Repton Branch of the Louisville and Nashville Railroad, the 

 St. Stephens limestone may, of course, be found at thousands 

 of places, but no mention is made of these occurrences where 

 thtey do not lie on railroad line. 



Below/ Monroe Station, near Drewry on the Repton Branch, 

 this road crosses the line of outcrop of the chimney rock, which 

 at a number of points in the vicinity- of Drewry lies within 

 easy reach of transportation. 



A few miles below Drewry, at Manistee Junction, there is a 

 fine exposure of Grand Gulf clays in railroad cuts, both north 

 and south of the station. 



Analysis is given (No. 9 of Table G), of the clays from these 

 cuts, from which their suitability from admixture with the 

 limestone may be determined. 



On the mam line of the Louisville and Nashville Railroad 

 The chimney rock may be found at many points below Ever- 

 green in the vicinity of Sparta and Castleberry stations. There 

 are many bluffs of this rock on the banks of Murder Creek in 

 this vicinity, and there are several quarries from which the stone 

 has been obtained for building purposes, within short distance 

 of the railroad line. At the foot of Taliaferro's Heights the 

 limestone forms high bluffs om the creek; at Ellis Williams 

 Spring there are bluffs with the soft rock at the base and the 

 hard horse-bone rock at the top, and on the creek bank, a few 

 hundred yards away, is one of the quarries mentioned above. 

 In fact the localities where the rock may be found within con- 

 venient distance of the railroad, and in a position favorable to 



