A number of the scientists moved in their seats. Professor Brown smiled broadly.
“A very simple matter to look at,” he said, pointedly. “Of course, it will be easy to furnish absolute evidence?”
Mr. Wade turned a cold stare upon the man who could speak so insultingly. Then he said:
“Before I allow the fact to go upon record I shall prove it.”
“Then we shall have an isthmus between Labrador and Greenland; another ‘twixt Japan and Corea; still another between Sicily and the Italian Peninsula, and again——”
“One moment,” said Wade, politely. “You must remember that there is nothing improbable in any hypothesis you have named. If I am not able to prove myself right, you are not able to prove that the sunken isthmus never existed. I leave it in all fairness to our fellow-members.”
There was a slight murmur of approval, but there was yet incredulity.
“How do you expect to prove that there was once an isthmus between Cape San Antonio and Cape Catoche, may I ask, Mr. Wade?” spoke the chairman.
Mr. Wade drew himself up.
“By the only possible method,” he replied. “I shall visit it.”