It was the general opinion that the two armoured vessels were merely tenders to the submerged machines which had done the mischief. Having fired no guns, nor taken any active part in the combat, there was every reason to believe that they were intended merely as bomb-proof store-ships for their formidable consorts. As these submerged vessels could not attack a town, nor reduce fortifications, but could exercise their power only against vessels afloat, it was plain enough to see that the object of the American Syndicate was to blockade the port. That they would be able to maintain the blockade when the full power of the British navy should be brought to bear upon them was generally doubted, though it was conceded in the most wrathful circles that, until the situation should be altered, it would be unwise to risk valuable war vessels in encounters with the diabolical sea-monsters now lying off the port. In the New York office of the Syndicate there was great satisfaction. The news received was incorrect and imperfect, but it was evident that, so far, everything had gone well. About nine o'clock the next morning, Repeller No. 1, with her consort half a mile astern, and preceded by the two crabs, one on either bow, approached to within two miles of the harbour mouth. The crabs, a quarter of a mile ahead of the repeller, moved slowly; for between them they bore an immense net, three or four hundred feet long, and thirty feet deep, composed of jointed steel rods. Along the upper edge of this net was a series of air-floats, which were so graduated that they were sunk by the weight of the net a few feet below the surface of the water, from which position they held the net suspended vertically. This net, which was intended to protect the repeller against the approach of submarine torpedoes, which might be directed from the shore, was anchored at each end, two very small buoys indicating its position. The crabs then falling astern, Repeller No. 1 lay to, with the sunken net between her and the shore, and prepared to project the first instantaneous motor-bomb ever used in warfare. The great gun in the bow of the vessel was loaded with one of the largest and most powerful motor-bombs, and the spot to be aimed at was selected. This was a point in the water just inside of the mouth of the harbour, and nearly a mile from the land on either side. The distance of this point from the vessel being calculated, the cannon was adjusted at the angle called for by the scale of distances and levels, and the instrument indicating rise, fall, and direction was then put in connection with it. Now the Director-in-chief stepped forward to the button, by pressing which the power of the motor was developed. The chief of the scientific corps then showed him the exact point upon the scale which would be indicated when the gun was in its proper position, and the piece was then moved upon its bearings so as to approximate as nearly as possible this direction.