STATE GEOLOGIST. 223 
this horizon. The sand varies considerably in structure. Sometimes it is 
coarse and porous, and at other times fine and hard. The wells are shot 
ordinarily with from 25 to 30 quarts of nitro-glycerine. The rock pressure 
of the field was originally about 500 pounds, but has now decreased to 
approximately 400. The largest wells produce from 1,000,000 to 2,000,000 
cubic feet per day. 
The Cambridge Light and Fuel Company charges 15 cents per thou- 
sand for the gas. Besides a large number of families the company sup- 
plies the local plant of the American Steel Sheet Company, which uses 
about 2,000, 000 cubic feet per day. The Cambridge Art Pottery Company, 
now in process of erection, expects to use gas, thus making another large 
draft on the field. The United Gas Company makes the same rate as the 
Cambridge. It supplies Cambridge, Byesville, Pleasant City, Hartford, 
Quaker City, Barnesville and Caldwell. However, several of these places 
derive their supply from the Dudley field. This company supplies the 
-water works and electric light plants at Cambridge, and the glass houses 
at Quaker City and Barnesville. 
Since the above was written in 1900, much drilling has been done in 
the Harmony field, with the result that the territory has been considerably 
extended. Later wells, however, were small, and the heavy demands have 
greatly decreased the rock pressure of the field. The supply is no longer 
adequate for the factories, and the same is true for domestic purposes. 
Had the fuel been restricted to the latter use the supply would have been 
ample for years. 
Besides the exploration around Cambridge and in the Harmony field 
a large number of deep wells have been drilled in other parts of the county. 
These are as follows: 
Londonderry Township—One Berea well in section 2, making 4 bar- 
rels of oil per day. 
Jackson Township,—_T wo Berea wells on the Siens farm in section 7. 
Both are small producers. 
Town of Senecaville.— About 1897 a well drilled at the edge of this 
village found oil at a depth of 162 feet. It produced to barrels the first 
day and none thereafter. The oil was sold as a lubricant. Other wells 
were drilled in the same vicinity, but all were failures. Many years ago a 
shallow well was drilled along Seneca creek, and the oil secured sold as 
Seneca oil.” ; 
Quaker City.—A well was drilled to the Berea in 1886. The sand 
was found at a depth of 1,341 feet, and was 6 feet thick. It produced a 
small flow of gas. Other wells have since been drilled in the same vicinity 
but without securing returns that compensate the operator. 
Kimbolton,— Two wells have been drilled near this place, one in 1887 
and the other soon afterwards. The first was a failure, but the second 
produced a moderate flow of gas, the rock pressure having risen to 300 
pounds or more. 
