KNOX COUNTY. 347 
Recent borings for salt north of Shawnee, in Perry county, reach the 
red shale at a depth of eight hundred and thirty feet, commencing on 
the horizon of the blue limestone, which is here one hundred and thirty- 
five feet below Coal No. 6, or the Great Vein of Perry county. The red 
shale is reported as from thirty to forty feet thick, and is here also at 
the base of the salt-bearing strata. 
ANALYSIS OF GAS FROM WELLS. 
An analysis made by Prof. Edw. W. Morley, of the gas emitted by one 
of Mr. Neff’s gas wells, and such as is used by him for the manufacture 
of lampblack, gave the following formula for its composition: 
SPOUT GEIR Coos Sbob dooHoode FOS SCH CEO EE4 Men BOSE HOR eo ser sere tr ea 0.65 
OSERSIIN Sis occ OEMA SS EG Gretel SIERO EI IS es Hie gE ee nae coal aH SecA VeRO 0.8 
Carbonic acid..--...... BS CEy ct Uae lesen eh Cues i Lun AE Rin Sy SS EE ae I RRL RACH 0.3 
We COD UCS) BARES LN A nA 0.5 
Marghy cas tas aeroe sass Sena ve ies 81.4 
Carbon and hydrogen, equivalent to ne Hrdrido see ancy oko andi 12.9 
INSLROGTOM Een ne aes SO OBO S SS COREE Gono He EcioetaT Elune Samy areiehe hoeieelale 4.8 
