| Show ARE GOOD indications indication professor Profess tr eavens of marrietta conge says that experience demonstrated rated that as a general fact supplies of petroleum found at a depth of two or three hundred feet or more are much more lasting than those found at aboss a alss depth oil coming to 0 o the surface in bulk bulky so often considered a proof of valuable territory bry is really nothing more than an index of shallow oil ti e petroleum lias has worked its way up tip through open fissures to the upper strata and is rapidly undergoing the process of exhaustion the most reliable surface indication that the source of the oil is ie deep is its appearance in a thin volatile scum on mineral springs the high te temperature m pera ture of oil springs as c compared in with that of ordinary springs is is another indication of a deep source these signs are always abu found tid in the best ai oil I 1 regions |
