To call these remarkable spirals "Devil's Corkscrews" seemed fairly appropriate, in view of the total lack of explanation for them. Always it has been customary to attribute whatever was inexplicable to Satanic origin; and, besides, how is one to account for the making of a twisted pillar 15ft. or more in height, as mathematically formed as any ordinary corkscrew, out of quartz rock, without intervention by some sort of artifice? (Wyoming Nebraska)