During an hour and a half, no indication of attack or landing could be observed on board the brig. Evidently Bob Harvey was hesitating. Even with his strongest telescopes he could not have perceived one of the settlers crouched among the rocks. It was not even probable that his attention had been awakened by the screen of green branches and creepers hiding the windows of Granite House, and showing rather conspicuously on the bare rock. Indeed, how could he imagine that a dwelling was hollowed out, at that height, in the solid granite. From Claw Cape to the Mandible Capes, in all the extent of Union Bay, there was nothing to lead him to suppose that the island was or could be inhabited. At eight o'clock, however, the colonists observed a movement on board the _Speedy_. A boat was lowered, and seven men jumped into her. They were armed with muskets: one took the yoke-lines, four others the oars, and the two others, kneeling in the bows, ready to fire, reconnoitred the island. Their object was no doubt to make an examination but not to land, for in the latter case they would have come in larger numbers. The pirates from their look-out could have seen that the coast was sheltered by an islet, separated from it by a channel half a mile in width. However, it was soon evident to Cyrus Harding, on observing the direction followed by the boat, that they would not attempt to penetrate into the channel, but would land on the islet. Pencroft and Ayrton, each hidden in a narrow cleft of the rock, saw them coming directly towards them, and waited till they were within range. The boat advanced with extreme caution. The oars only dipped into the water at long intervals. It could now be seen that one of the convicts held a lead-line in his hand, and that he wished to fathom the depth of the channel hollowed out by the current of the Mercy. This showed that it was Bob Harvey's intention to bring his brig as near as possible to the coast. About thirty pirates, scattered in the rigging, followed every movement of the boat, and took the bearings of certain landmarks which would allow them to approach without danger. The boat was not more than two cables-lengths off the islet when she stopped. The man at the tiller stood up and looked for the best place at which to land. At that moment two shots were heard. Smoke curled up from among the rocks of the islet. The man at the helm and the man with the lead-line fell backwards into the boat. Ayrton's and Pencraft's balls had struck them both at the same moment. Almost immediately a louder report was heard, a cloud of smoke issued from the brig's side, and a ball, striking the summit of the rock which sheltered Ayrton and Pencroft, made it fly in splinters, but the two marksmen remained unhurt.