SECTIONAL DIAGRAM SHOWING THE RELATION OFTHE CONDUCTOR TO THE REST OF THE CASINGIN A SUBMARINE OIL WELL. other lengths are screwed on and the operations con-tinued until that object is attained. When the con-ductor has been driven a few feet into the clay under- … GENERAL VIEW OF SUMMERLAND, CAL., SUBMARINE OIL FIELDS. Ball Lightning at Sea. Robert Seyboth, of the United States WeatherBureau, tells of an experience with ball lightningwhile at sea in Hudson Bay in 1867. The phenomenonwas witnessed during a storm. Happening to secure the upper hold on the…
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