GEOLOGIC AGE AND GEOGRAPHIC DISTRIBUTION. 41 
At the point of the section where the lignite is exposed in its 
greatest thickness 3 or more feet of this clay appear in the hillside 
facing the stream. It is chocolate brown when wet, its color being 
due to the presence of minute particles of finely divided lignite, for 
there is no other coloring matter present. 
The third locality is on a small stream known as Otter Creek, 1^ 
miles northwest of Bay Village. The drab fire clay is about 2 feet 
thick on the immediate bank of the stream. The clay extends over 
much of the surrounding region and is of comparatively easy access. 
It has been put to no use thus far. 
The fourth locality is in Greene County, on the banks of Beech 
Creek, where the fire clays are indurated into a soft light-drab shale 
with conchoidal fracture. It passes under a cultivated field near the 
stream to the west and disappears in the high hills that border the 
creek on the east. 
Above the clays in this Beech Creek section lie indurated and 
quartzitic Tertiary sandstones. If these deposits are ever deemed 
of sufficient importance to work, they can be ground so that they 
may be used. The outcrop extends for a long distance up the stream, 
and there is no doubt that these clays underlie all the country 
immediately adjoining. 
Another locality in Greene County where fire clays occur is south- 
west of the place last mentioned, in sec. 10, T. 17 N., E. 4 E. An 
analysis of this clay was made at the St. Louis Sampling and Testing 
Works and is reported as follows: 
# Analysis of clay from Greene County. 
Moisture 17. 64 
Combined water and organic matter 6. 63 
Silica (Si0 2 ) 70. 43 
Alumina (A1 2 3 ) 19. 15 
Lime (CaO) 52 
Magnesia (MgO) Trace. 
Iron 1.70 
Alkalies 1. 84 
100. 27 
The clay at this place outcrops on the side of a hill, in a ravine near 
its base, and may be connected directly with that found at the 
Lovelady place, in sec. 30, T. 18 N., R. 5 E. It could be employed 
in the manufacture of fire bricks of ordinary grades, as well as for 
sewer pipes, tile work, and similar uses. 
In sec. 30, T. 19 N., R. 6 E. ; there is a deposit of fire clay in the 
bank of a small stream. Probably the same bed is reached in a well 
in the Cache bottoms, 1£ miles farther southwest. These beds 
appear to be related to those on Beech Creek near Lovelady. They 
