550 WESTERN COAL MEASURES AND INDIANA COAL. 
that I can recall no prominent locality where it is distinctly refer- 
able to one or the other of the above sandstones. For the equiv- 
alency of sandstones in the Western coal field I have, as yet, been 
unable to find any lithological or paleontological evidence which 
can be relied upon as a guide to identity. 
In the Indiana Report by Prof. Richard Owen, 1859-60, Prof. - 
Lesquereux refers, from paleontological evidence, the sandstone 
above the ‘‘ Knob” coal in Spencer county, to the Mahoning sand- 
stone, and appears undecided, whether the position of the ‘‘ Mar- 
tha Washington ” sandstone, which forms the bluff at Rockport and 
presents a vertical face of thirty to fifty feet on the side fronting 
the river, should be referred to the Mahoning or the sandstone 
above coal No. 2 of his general section given at pages 299-305, 
(column No. 1 of diagram). At these localities, from my own ex- 
aminations, I find the Rockport Sandstones to be the Millstone 
grit, and the ‘“‘ Knob” coal to be coal L of my general section of 
the coals in Clay county (column No. 3 of the diagram). Conse- 
quently, the sandstone which overlies it, in the hill, if referred at 
all to an equivalency in the Kentucky section, will be at least 
about the place of the Anvil Rock sandstone. 
At Washington, in Daviess county, Mr. Lesquereux found a 
paucity of paleontological evidence, nevertheless it was believed 
to be sufficient to warrant him in referring the main coal of that 
place to No. 1, B, of his section. In his account of the measures, 
in Daviess county, no mention is made of the heavy bed of sand- 
stone, two miles northeast of Washington, which is overlaid by 
the ‘ Washington Coal” which he refers to No.1, B. This sand- 
stone is quite a marked feature in the geology of this part of 
Daviess county and is underlaid by two workable beds of coal— 
the upper three feet thick, and the lower three to six feet thick; 
the space between the two, varying from twenty to forty feet. 
The lower coal has usually a limestone over it; and being the 
second coal, in the descending order, below the ‘* Washington 
coal” is represented as K in my section. ‘A coal fourteen miles 
north of Washington, overlaid by limestone, is, from its position, 
referred by him to coal No. 1, C. I suppose the coal in the bed 
of the river below Edwardsport, in Knox county, is the seam here 
referred to; if so, it is the second seam below the ‘‘ Washington 
coal.” Now the ‘ Washington coal” is at least as high up in the 
measures as coal L of my section. The first coal below L, in. 
