Geology. 281 
2. Note on Mr. Lesquereuz’s Table of Comparative Sections of Coal 
Measures. (To the Editors of the Am. Jour. Sci. and Arts.) —Through- 
out the notice of the Kentucky Geological Survey, published in the Jul 
number of your Journal, my name is perhaps liable to be confounded wi 
that of my brother Joseph Lesley, Jr., to whom is due whatever credit 
belongs to the Topographico-geological report of the margin of the east- 
ern coal field of Kentucky.* As in this notice, quotations from my friend 
t. Lesquereux refer several times to my little Manual of Coal and its 
topography, published in 1856, I trust that you will permit mea word or 
two in relation to its exhibition of the Pennsylvania measures. The sec- 
tions referred to in the Manual are most of them from ten to twenty years 
old, and were offered as illustrations of principles, not as guides to local ge- 
ologists. They were meant to exhibit the general scheme of the Coal 
Measures ; but neither settled the principal questions mooted among us, 
hor embodied late discoveries. One of these is uf such importance that 
I wish to call special attention to it here, as I have done once already at 
¢ Montreal Meeting of the American Association. 
It will be noticed in Mr. Lesquereux’s “ Table of Comparative Sections” 
accompanying your notice, and in the first two columns representing the 
Kentucky Coals, that a group of beds, four in number, seem to be 
— in the other columns by only one bed, the Pennsylvania Pittsburg 
it. ben 
twelve and sixteen feet thick respectively, with intervals of fifty and sixty 
feet between them - and, with these, just under the Anvil Rock, was a 
miles w 
that the middle Kentucky area, or 
be uded of the same coal 
fording a satisfactory demonstration, 
Cincinnati Axis as we used to call it, has been de 
nd Peter Lesley, the author of a “ Manual of Coal and its Topography,” and 
oe °riginal corps of Assistants on the teers 
— eh 1848 soos 7 — ee se 
So. ee on p. 118 need rplexed in 
: Bes his accomplished brother Teac Lesley, Jr., aut 
- logical , Report of Kentucky.—Epbs. 
Am, Jour. Sct.—Szconp Serms, Vou. XXXII, No. 95.—Szpt., 1861. 
36 
4 
