us—on this unknown island?" inquired Mrs. Anderson.
"I fancy Captain Mentor can supply our longitude and latitude," answered Tom. "I will give that with every message I send out, and help may come—some day."
"It can't come any too quick for me!" declared Mr. Damon. "Bless my door knob, but my wife must be worrying about my absence!"
"What message for help will you send?" Captain Mentor wanted to know.
"I am going to use the old call for aid," was the reply of the young inventor. "I shall flash into space the three letters 'C. Q. D.' They stand for 'Come Quick—Danger.' A new code call has been instituted for them, but I am going to rely on the old one, as, in this part of the world, the new one may not be so well understood. Then I will follow that by giving our position in the ocean, as nearly as Captain Mentor can figure it out. I will repeat this call at intervals until we get help"
"Or until the island sinks," added the scientist, grimly.
"Here! Don't mention that any more," ordered Mr. Hosbrook. "It's getting on my nerves! We may be rescued before that awful calamity overtakes us."
