It was now about the beginning of August. A few weeks only of possible fine weather remained. Gaul was quiet, not a tribe was stirring. The people were stunned by Caesar's extraordinary performances. West of the channel which washed the shores of the Belgae lay an island where the enemies of Rome had found shelter, and from which help had been sent to the rebellious Bretons. Caesar, the most skilful and prudent of generals, was yet adventurous as a knight-errant. There was still time for a short expedition into Britain. As yet nothing was known of that country, save the white cliffs which could be seen from Calais; Roman merchants occasionally touched there, but they had never ventured into the interior; they could give no information as to the size of the island, the qualities of the harbors, the character or habits of the inhabitants. Complete ignorance of such near neighbors was undesirable and inconvenient; and Caesar wished to look at them with his own eyes. The fleet which had been used in the war with the Veneti was sent round into the channel. He directed Caius Volusenus, an officer whom he could trust, to take a galley and make a survey of the opposite coast, and he himself followed to Boulogne, where his vessels were waiting for him. The gathering of the flotilla and its object had been reported to Britain, and envoys from various tribes were waiting there with offers of hostages and humble protestations. Caesar received them graciously, and sent back with them a Gaul, named Commius, whom he had made chief of the Atrebates, to tell the people that he was coming over as a friend, and that they had nothing to fear.