When the fleet finally got under way again there was a nice breeze from the south, which sent the canoes along at the rate of four or five miles an hour. Chambly, the northern end of the canal, was reached before four o'clock, the boys having lunched on bread and water while in the canoes in order not to lose time by going ashore. They passed safely through the three great locks at Chambly; and entering the little lake formed by the expansion of the river, and known as Chambly Basin, they skirted its northern shore until they reached the ruins of Chambly Castle.
More than one hundred and fifty years ago the Frenchmen built the great square fort, with round towers at each angle, which is now called Chambly Castle. At that time the only direct way of communication between the settlements on the St. Lawrence and those in the valleys of the Hudson and the Mohawk was up the Richelieu River, Lake Champlain, and Lake George. It was this route that Burgoyne followed when he began the campaign that ended so disastrously for him at Saratoga, and it was at Chambly Castle that he formally took command of his army. The castle was placed just at the foot of the rapids, on a broad, level space, where Indians used to assemble in large numbers to trade with the French. Its high stone walls, while they could easily have been knocked to pieces by cannon, were a complete protection against the arrows and rifles of the savages, and could have withstood a long siege by any English force not provided with artillery. In the old days when the castle was garrisoned by gay young French officers, and parties of beautiful ladies came up from Montreal to attend the officers' balls, and the gray old walls echoed to music, and brilliant lights flashed through the windows, the Indians encamped outside the gates must have thought it the most magnificent and brilliant place in the whole world. Now there is nothing left of it but the four walls and the crumbling towers. The iron bolts on which the great castle gate once swung are still imbedded in the stone, but nothing else remains inside the castle except grassy mounds, and the wild vines that climb wherever they can find an angle or a stone to cling to.
The canoeists made their camp where the Indians had so often camped before them, and after supper they rambled through the castle and climbed to the top of one of the towers. They had never heard of its existence, and were as surprised as they were delighted to find so romantic a ruin.
"I haven't the least doubt that the place is full of ghosts," said Charley, as the boys were getting into the canoes for the night.
"Do you really believe in ghosts?" asked Tom, in his matter-of-fact way.
"Why," replied Charley, "when you think of what must have happened inside of that old castle and outside of it when the Indians tortured their prisoners, there can't help but be ghosts here."
"I don't care, provided there are no mosquitoes," said Joe. "Ghosts don't bite, and don't sing in a fellow's ears."
Any one who has camped near a rapid knows how strangely the running water sounds in the stillness of the night. Joe, who, although there were no mosquitoes to trouble him, could not fall asleep, was sure that he heard men's voices talking in a low tone, and two or three times raised himself up in his canoe to see if there were any persons in sight. He became convinced after a while that the sounds which disturbed him were made by the water, but, nevertheless, they had made him rather nervous. Though he had professed not to be afraid of ghosts, he did not like to think about them, but he could not keep them out of his mind. Once, when he looked out of his canoe toward the castle, he was startled to find it brilliantly lighted up. The light was streaming from the case-mates, loop-holes, and windows, and it was some moments before he comprehended that it was nothing more ghostly than moonlight.
Toward midnight Joe fell asleep, but he slept uneasily. He woke up suddenly to find a dark object with two fiery eyes seated on the deck of his canoe, and apparently watching him. He sprang up, with a cry of terror, which awakened his comrades. The strange object rushed away from the canoe, and stopping near the gate of the castle, seemed to be waiting to see what the boys would do.