The author's former views on American storms were first alluded to—i.e., that the phenomena could only be accounted for on the supposition that there were two distinct currents. Instead of these being parallel, they were more nearly at right angles to each other. The southerly current on the eastern axis of storms brought up heat and moisture from the Gulf of Mexico, causing the barometers to fall. The west or north-west wind, on the other hand, cleared the southerly current away, causing the temperature everywhere to fall and the barometer to rise.