Mr. Summerlee declared, with an acid smile, that he fully appreciated the difference between the Thames and the Amazon, which lay in the fact that any assertion about the former could be tested, while about the latter it could not. He would be obliged if Professor Challenger would give the latitude and the longitude of the country in which prehistoric animals were to be found.

Professor Challenger replied that he reserved such information for good reasons of his own, but would be prepared to give it with proper precautions to a committee chosen from the audience. Would Mr. Summerlee serve on such a committee and test his story in person?

Mr. Summerlee: “Yes, I will.” (Great cheering.)