8. A dense, heavy bank of cloud in the direction of the hurricane.
9. A peculiar appalling appearance in this bank, more particularly as if it were a solid wall, drawing down upon and closing around the ship.
10. A darting forward of portions of this bank, as if torn into rags and shreds by some violent force, and driven before, not borne, by the wind. When this indication is distinctly recognized, a run of about two hours toward the center will involve the vessel in a destructive hurricane.
11. A peculiar motion exhibited by small bodies, as branches of trees when agitated by the wind, consisting of an apparent whirling, not a bending forward, as if bent by a stream of air.
12. Lightning of a remarkable columnar character, shooting up in stalks from the horizon with a dull glare; also like flashes from a gun, and sparks from a flint and steel.
METEOROLOGICAL SIGNS RECOGNIZED
BY THE EAR.
1. A distant roar (probably of the hurricane itself) as of wind rushing through a hollow vault.
2. A peculiar moaning of the wind, indicative of the close proximity of the violent portion of the hurricane.
THE METEOROLOGICAL PHENOMENA ACCOMPANYING
A REVOLVING STORM MAY ALSO BE
ENUMERATED THUS:
1. A very rapid motion of the air constituting the hurricane, and increasing in velocity as the center is approached.