In this country, at least, natural gas is advancing rather rapidly in public appreciation and regard. It is found to be much more widely distributed, both geographically and geologically, and to exist in much larger quantity than any one would have ventured to claim 20 or even 10 years ago. It is no longer an unusual thing for a village or city to enjoy a more or less adequate supply of natural gas as a source of artificial heat and light. There are many such examples in New York, Pennsylvania, Ohio, West Virginia, Kentucky, Indiana, Illinois, and Kansas.
As to its productive horizons, there is hardly a stratum in the Paleozoic column of the country that is not somewhere, in some of its phases or conditions, a gas rock.
While it occurs in shales, sandstones, . . .