“Very good,” said Uncle Dick. “Which side of the equator are we?”
“South,” answered Frank.
“How many motions have cyclones?”
“Two; rotary and progressive.”
“Which way do they revolve in the Southern hemisphere?”
“In the same direction that the sun appears to move.”
“Correct. Now, suppose that while you were in command of the Tycoon, you had found out that there was a cyclone coming—”
“I’m afraid I shouldn’t have found it out,” interrupted Frank, “for I don’t know what the signs are.”
“But we will suppose that you knew all about it. After you have seen one or two, you will know how to tell when they are coming. We will suppose, now, that a cyclone comes up, and that the wind blows strongly from the northwest. Which way from you is the centre of the storm?”
“Southwest.”