"That's sort of queer," remarked Jack a little later.
"What is?" asked Mark, who was sitting near his chum.
"All the fish seem to have suddenly disappeared," replied Jack. "There were hundreds a little while ago, and now I haven't seen one looking in the windows for some time."
"Perhaps there's a big fish on their trail," observed Mark. "That's what makes 'em take to the deep sea weed."
A little later Professor Henderson entered the room. He went over, looked at the thermometer, and then called to Washington:
"Have you got the heat turned on?"
"No, sah! I ain't done truned on no superheated vapor into de radiators," replied the colored man. "I were jest thinkin' dat we'd hit de south pole by de feel of it."
"It is getting strangely warm," admitted Mr. Henderson.
"Ain't that what you expected at the south pole?" asked Andy. "I thought it was hot at the south pole and cold at the north."