AREA.—This field lies in the three counties, Athens, Perry and Morgan. Leaving out of consideration at present a few small outlying pools, and starting at the south, the productive territory may be said to begin in Section 22, Trimple township, Athens county. From this point it runs almost due north to the Perry county line. The widest part of this portion of the field does not exceed one-half mile, while the narrowest portion permits of a single row only of wells. [A] Published by permission of Edward Orton, Jr., State Geologist. It enters Monroe township, Perry county in Section 33, and runs almost due north towards Corning, but bends to the northeast about one mile south of that place. Here the productive territory attains a maximum width of 3 miles, the greatest in the field. The northeast course is continued to the Morgan county line, where it turns due north, skirting that line with a productive strip about one-half mile wide for 2½ miles, when it turns slightly to the east, entering Morgan county in Section 31 of Deerfield township. From that place it extends through Section 30 and into Section 19, beyond which it has not been traced. Development of this part of the field is retarded by floods of salt water which may limit it in this direction. The total length of the field is about 14 miles. Outside of this belt are four pools, two of which are of little importance. One lies around Glouster, and has an area of less than one square mile. A second one lies in Sections 22 and 29, a short distance northwest of Glouster. This is the principal territory from which the gas of Corning and surrounding towns is derived. A third pool lies around Porterville, and the fourth known as the Oakfield lies from 3 to 5 miles north of Corning. It includes parts of sections 5, 21, 28, 29, 32, and 33 of Pleasant and 22, 27 and 34 of Bearfield townships. It is in this pool that the most extensive work is being done at the present time. DISCOVERY.—Probably the first deep well drilled in the Sunday Creek Valley was near Burr Oak, about 4 miles south of Corning. Its date is not now known, but it must have been 40 or more years ago. Its depth is likewise unknown, but it is reported to have penetrated the salt sand. To this day it flows salt water, and with it sufficient gas to be ignited. This well, however, seems not to have aroused suspicion that there might be valuable liquids other than salt water buried in the rocks.