222 The American Geologist. ^"••"' ^''^'^■ 
Bucyrus, Marion, Mt. (iilead, Mansfield, Gallon, Crestline, 
Shelby, and Ashland; in tlie central part of the state, Columbus, 
Delaware, Westerville, Newark, Mt. Vernon, Zanesville, Lan- 
caster, and Circle vi lie; in the southern and southeastern parts, 
Logan, Nelsonville, Athens, and Chillicothe; in western Ohio, 
Dayton, Springfield, Urbana, Piqua, Troy, and Sidney. 
The original rock pressure of this field was about 900 
pounds to the square inch, but under the heavy calls made the 
pressure has become much less. This however varies from 
place to place; in the fall of 1902 it had decreased to icx) 
pounds around Sugar Grove, but at other poirits it was larger, 
rising occasionally to 600 pounds. This low pressure was not 
sufficient to drive the gas through the lines to distant points, 
and in 1900 the companies began the construction of powerful 
compressors. Later midway stations were built, so at the pres- 
ent time the rock pressure is strongly re-enforced, and in this 
manner the lines are kept filled. Probably the largest well in 
this territory had an initial open flow at the rate of 12,000,000 
cubic feet per day; but at the present time wells of one-third 
that size are looked upon with much satisfaction. Persons 
familiar with the field estimated that the average quantity of 
gas per well put into the lines in 1902 w^as about 250,000 cubic 
feet per day. It is safe to say that during the year just 
mentioned at least 60,000,000 cubic feet of gas have been taken 
on the average from the Sugar Grove field every twenty-four 
hours. This territory has already passed the zenith, and unless 
extensions are found its production will decrease rapidly. 
One more paragraph and the historical side of this question 
will be brought to a close. In July, 1900, a well was completed 
near the village of Homer in the northern part of Licking 
county, and began producing about 1,500,000 cubic feet of gas 
per day. Other wells were drilled within the following year, 
and with similar results. Late in the cUitumn of 1901 and e irly 
in 1902 larger producers were secured, and consequently dur- 
ing the latter year work was very active. Nearly all the w^lls 
were successes, and ranged in size from about 1,000,000 to 
4,000,000 cubic feet per day, the rock pressure varying ordin- 
arily from 700 to 800 pounds per square inch. The greater 
number of these were in Burlington township, Licking county. 
Early in the fall of 1902 a well was completed on the 
