To leave such insults unpunished was impossible to all with American blood in their veins.

Had not the sons of Amerigo been called the sons of Cabot?
Was not that an insult as unpardonable as it happened to be just--historically?
The members of the club in several groups rushed down Walnut Street, then into the adjoining streets, and then all over the neighborhood.
They woke up the householders; they compelled them to search their houses, prepared to indemnify them later on for the outrage on their privacy.

Vain were all their trouble and searching.

Robur was nowhere to be found; there was no trace of him.

He might have gone off in the "Go-Ahead," the balloon of the Institute, for all they could tell.
After an hour's hunt the members had to give in and separate, not before they had agreed to extend their search over the whole territory of the twin Americas that form the new continent.
By eleven o'clock quiet had been restored in the neighborhood of Walnut Street.