It was the presence of this light in the atmosphere, emanating apparently from the clouds themselves, that caused me rather to doubt the correctness of the opinion, pretty freely expressed by the men, that what was brewing was nothing more serious than an ordinary thunderstorm, for I had witnessed something of the same kind before, on the coast, but in a much more marked degree, it is true; and in that case the appearance had been followed by a tornado, brief in duration, but of great violence while it lasted.
