7(\ CEMENT MATERIALS AND INDUSTRY. [bull. i»43. 
Two analyses of these varieties at Hatchs will show well the contrast! 
in their chemical composition (analyses 19 and 20, p. 82). 
From Demopolis eastward the line of the Southern Railway if 
located on the outcrop of this white rock, at least as far as MassilloB 
where it passes into the territory of the lower or Selma division] 
Two miles from Demopolis on this road is the cement manufacturing 
plant of the Alabama Portland Cement Company, with six kilns i 
place. The quarry is on the opposite side of the railroad track froa 
the kilns, but only a few hundred feet distant. The clay used j if 
residual clay derived from the decomposition of the limestone, and i 
obtained from the river bank a few yards away. The composition d 
the rock and of the clay used in the manufacture is shown by analyse 
15, 18, 46, 100. A specimen taken from Knoxwood station, betwee 
the cement works and Demopolis station, shows similar compositio 
(analysis 17). The analyses given (61, 63, p. 84) show the chemic: 
character of the cement manufactured at Demopolis. 
At Van Dorn station the white rock outcrops in the fields ov 
considerable territory, and just east of the station there is a deep c 
through it. Analyses from about Van Dorn show sufficiently we 
the character of the material at these points (analyses 21, 22, 47 
49, 50, 51, 52). 
About Uniontown the bare rock is exposed at numerous points, an 
the advantages of this place for the location of manufacturing plant 
seem to be very great. Specimens have been taken from the Brae 
field and Shields places, west of the town, from the Pitts place eal 
of it, and from a point south of the town along the McKinley roac 
Other specimens have come from plantations near the road for seven 
miles eastward and the analyses are appended (analyses 23, 24, 25, 29 
The composition of the residual clay overlying the limestone at tj I 
Pitts home place is shown by analysis 55. South of Massillon, nei 
the crossing of the Southern and the Louisville and Nashville railroad \ I 
in the vicinity of Martins station, the white rock shows in numeroi 
exposures through the fields, making a country somewhat similar I 
that about Uniontown. At many points the rock has no overburdfl 
and is admirably adapted to cheap quarrying. On the banks of Bog 
Chitto Creek, near Martins station, on the Millions place, the rock 
exposed in a bluff with a bed of plastic clay overlying, but here it 
below a considerable thickness of red loam and sands of the Laf aye' 
formation. The character of the rock at Milhous station, west 
Martins, may be seen from analysis 27. 
The same rocks make the great bluff of White Bluff, on Alabama 
River. Specimens were selected from this bluff at two points — o: 
about halfway down the bluff, the other 20 feet lower. GeneralBii 
there is a capping of the red loam and sands of the Lafayette over I 
limestone, but near the upper end of the bluff the white rock exterH 
ii 
