noon
`` Our guest ! '' amended Marjorie , with a warm smile . * * * * * Next morning Blake motored Kendrick out to the Brooklyn Laboratory of the Consolidated Electric Utilities Corporation and installed him there . Then he left -- to return at noon with the promised delegation of generals , admirals , statesmen and financiers . They were all frankly sceptical , though realizing that Henderson Blake was not a man given to exaggeration . Nor did their scepticism altogether vanish when Kendrick had ended his bizarre story with a demonstration of the invisibility device . Murmurs of amazement ran around the laboratory , it is true , but the more hard-headed of his spectators charged him with having invented the apparatus himself .