It was a grand success. Every one said so; and moreover, every one who witnessed the experiment predicted that the Mermaid would revolutionize naval warfare as completely as did the world-famous Monitor. Professor Rivers, who had devoted the best years of his life to perfecting his wonderful invention, struggling bravely on through innumerable disappointments and failures, undaunted by the sneers of those who scoffed, or the significant pity of his friends, was so overcome by his signal triumph that he fled from the congratulations of those who sought to do him honour, leaving to his young assistants the responsibility of restoring the marvellous craft to her berth in the great ship-house that had witnessed her construction.