312 The American Geologist. May, 1891 
Ferric oxide (Fe 2 3 ) 10.71 
Carbonic acid None 
Sulphur 0.384 
Phosphorus 0.286 
About 300 feet from the mouth in this drift the coal measures 
20 inches. Its analysis will also be found with the rest. 
Throughout the drift the Warrior seam and its overlying black- 
band vary somewhat in thickness, but more in their distance 
apart. The measures throughout exhibit very great variability in 
thickness and relative position, and this is true of the whole War- 
rior field, so far as it has been observed by the writer. Two feet 
two inches seemed to represent an average of the larger seam of 
coal, however. It was slightly less than this at the present work- 
ing face. 
A 4-inch thick clay vein dips south 10°, west 15° near the top 
of the slope. 
This represents the general direction of inclination of the 
strata, but is much steeper than the average dip. 
I visited the shore of the Locust Warrior, passing b} T the 
Watts mines, and the deposit of sand washed out by the river 
and accumulated at one of its bends opposite Turkey creek. A 
specimen of this sand yielded on analysis 90.56 per cent, silica. 
This has been washed out of the numerous loose sand rocks by 
the river, and deposited at the point where its current has been 
obstructed, and the materials in suspension have been allowed to 
fall. There ought to be many such accumulations along this 
stream, as the rocks are easily disintegrated, the current is at sea- 
sons very strong and rapid and the channel of the river is sinuous. 
This deposit was estimated to be 600 feet broad and ten feet 
thick, tapering off on each side of the elbow in the stream at points 
a couple of hundred yards apart. 
One hundred } r ards northeast of the sand exposures is a deposit 
of brick clay of good quality. An analysis showed it to contain : 
Silica 78.20 
Ferrous oxide 0.35 
Alumina 12.20 
Its extent was not well defined. Ascending the hill north at 
about 70 feet above the river, a conglomerate occurs with quartz 
and rounded pel)! ties dipping steeply about south 10 east. 
At the Watts mine, a drift is run in about 60 feet above the 
level of the Locust Warrior, and a coal seam is exposed dipping 
