LOGAN COUNTY. A485 
ships. Its thickness is probably between sixty and one hundred feet, 
but no where in the county have both top and bottom been exposed at 
the same place, and the records kept of borings are so imperfect as to be 
worthless. The largest quarries are those of Messrs. Scarf, at Bellefon- 
taine, of General A. 8. Piatt, on the Makachack, in Monroe township, 
and Mr. J. B. Sharpe, at Middleburg. Messrs. Scarf’s quarry has been 
worked for a depth of over twenty feet, chiefly for lime, one thousand 
bushels of which are produced by twenty-five cords of wood. The pro- 
duct is of good quality and color, but difficult to ship, on account of the 
rapidity with which it air-clacks, only three or four days being required 
to reduce it. 
Some courses show hydraulic qualities, but no systematic experiments 
have been made with it, nor could any estimate be had of the amount 
of business done. | 
General Piatt’s quarry has been worked to about the same depth, and 
the lime produced by the same expenditure of fuel, and of perhaps 
rather better quality. The building stone has been all consumed in the 
meighborhood. it is capable of being worked to fine effect, as the 
(General’s own mansion abundantly testifies. Mr. Sharpe’s quarry, at 
Middlesureg, has been worked to about the same depth as the others, but 
with more system, and exposes the rock better. The section may be 
described as— 
PEEL. 
CHEER aS OLE, POWER He aaa espe sae rs cna rep a pa Pe a 2 
Ist course, much broken ......---. Nemes Berea be feet sta esis a se MeO Se aia lpia 6 
Pai Ly ene SOW ATES! eevee Ss RES Oe Ro SE NOE ite et ee h ok Baal 
‘Ocherous seam. 
3d course, firm, thin layers..-.-- bs WS chs apaehowtiord see tsa Sas aitpetere ace ole 3 
Alga” FEY HICG A cat es ST hata tepaee tes aes MINUS ih Nae! cia hee ie al eel a 4 
Ha SY CrSti A tha UR Ro eta LS LENE DN ea ali tigi See ie Deb vs, Od, eh Bape aco a 6 
23 
Numerous small quarries have been opened all around the edges of the 
island, both for stone and for lime, but they are only worked occasionally 
and for local purposes. 
The geological scale of the State calls for a bed of Oriskany Sandstone 
under the Corniferous, and of Hamilton above it, but there are no traces 
of either to be found in Logan county. Dr. Newberry (Vol. I., p. 141) 
speaks of Oriskany Sandstone at West Liberty, but this is most probably 
a mistake. In General Piatt’s quarry, on the Makachack, a bed of fine 
sandstone exists, that has been quarried and reduced to sand for plaster- 
ing, with excellent success, but it is only a local deposit in the upper layers 
ot the Corniferous, fifty-five feet above the top of the Helderberg, in the 
