282 Scientific Intelligence. 
complete survey of the outcrop across the whole State of Kentucky shows 
nothing of it. On the contrary, everywhere along the great escarpment 
line of the Ohio, Kentucky and Tennessee outcrop, denudation reigns su- 
preme as limiting the coal area westward, without observable assistance 
from nonconformability. And certainly the exact agreement of the great 
group of upper beds and Top Rock of Somerset County, Pennsylvania, 
agree with Mr. Lesquereux.* 
There are some other points which I wish to touch on while occasion 
offers. My friend Mr. Lesquereux wishes to suppress the name False Coal 
Measures. I agree with him. I never liked the term. I used it because 
there was no other. In fact no other has been suggested, except in con- 
nection with some whole nomenclature, such as Mr. Rogers’s Vespertine 
coal. But then it has a well-known meaning, and is understood by 
everybody. Geologists always talked of the Coal Measures. But a day 
came when a whole series of carboniferous rocks were discovered not be- 
longing to the Coal Measures, and in fact thousands of feet below the ac- 
deceived the Nova Scotia geologists, even into inventing an extraordinary 
theory of lagoons and back deposites, They still exist, and they 
ve some name. They are still deceptive, What shall we call them ? 
ures. He says the distinction is invalid, because it is based upon the fact 
that they are not generally found over the whole extent of the coal-fields of 
America. I think my friend is wrong. He un tes their extent. 
gorge 
ly two 
coal-beds three feet thick, siz hundred feet below the great conglomerate 
at the base of the Coal Measures. At Augusta Springs in Virginia, and 
de 
determined their independence also by at least one fossil p 
has never seen above the Red Shale; that is in connection with the + 
Coal Measures. This system although to all appearance, full 1500 feet 
Jower in the series than the Tipton coal, cannot be considered other thaa 
ove it; inasmuch as the Red Shale is only about one hundred fee 
* See his paper in this Journ, vol. xxviii, pp. 28, 29. 
