It was obvious to Champlain that this fort was a complete protection to the Iroquois, unless an opening could be made in its walls. This could not be easily done by any force which he and his allies had at their command. His only hope was in setting fire to the palisades on the land side. This required the dislodgement of the enemy, who were posted in large numbers on the gallery, and the protection of the men in kindling the fire, and shielding it, when kindled, against the extinguishing torrents which could be poured from the water-spouts and gutters of the fort. He consequently ordered two instruments to be made with which he hoped to overcome these obstacles. One was a wooden tower or frame-work, dignified by Champlain as a _cavalier_, somewhat higher than the palisades, on the top of which was an enclosed platform where three or four sharp-shooters could in security clear the gallery, and thus destroy the effective force of the enemy. The other was a large wooden shield, or _mantelet_, under the protection of which they could in safety approach and kindle a fire at the base of the fort, and protect the fire thus kindled from being extinguished by water coming from above. When all was in readiness, two hundred savages bore the framed tower and planted it near the palisades. Three arquebusiers mounted it and poured a deadly fire upon the defenders on the gallery. The battle now began and raged fiercely for three hours, but Champlain strove in vain to carry out any plan of attack. The savages rushed to and fro in a frenzy of excitement, filling the air with their discordant yells, observing no method and heeding no commands. The wooden shields were not even brought forward, and the burning of the fort was undertaken with so little judgment and skill that the fire was instantly extinguished by the fountains of water let loose by the skilful defenders through the gutters and water-spouts of the fort. The sharp-shooters on the tower killed and wounded a large number, but nevertheless no effective impression was made upon the fortress. Two chiefs and fifteen men of the allies were wounded, while one was killed, or died of wounds received in a skirmish before the formal attack upon the fort began. After a frantic and desultory fight of three hours, the attacking savages lost their courage and began to clamor for a retreat. No persuasions could induce them to renew the attack.