"Where would you like to go next?" asked Uncle Braun.

"To the bridge over the Main," they answered promptly, for they believed that they would never grow weary of watching the cool, rippling water making its way to the Rhine and from thence to the sea. So to the bridge they went and leaned upon the parapet and gazed upon the scene as they had done the evening before.

"Did you ever hear how Frankfort got its name?" asked their guide.

"No, we never heard."

"It is said that at that point," he continued, designating it with his cane, "the river was at one time so shallow, owing to a ridge of rocks under its bed, that it could be forded by persons on foot. One time when Charlemagne—or Charles the Great—was battling against the Saxons, he was compelled to retreat before them, and they were in hot pursuit. The French forces were weak, while the Saxons were strong, but if he and his army could cross the Main, all would be safe. A heavy fog rested upon the river and they could not find the safe fording. The French ran up and down the shore, hoping to see someone who could tell them the location of the ford, but found no one. The enemy was advancing rapidly upon them and they had about given up in despair, when they saw a deer with her young step into the water and cross safely. In full confidence that the instinct of the animal had guided her correctly, they followed and reached the south side of the Main safely. The Saxons followed, but could not find the shallow place to cross, for there was no deer to guide them, and the city, dating from that time, was called Frankenfurt or Frankfort."

This narrative was of deep interest to the boys, who gazed at the spot where Charlemagne had crossed more than eleven hundred years before.

"Did he live in Frankfort?" asked Paul.

"Yes, for even at that time the city was of some importance. He built a fine palace which he named 'Frankfort,' and did much to improve the city and neighborhood. He formed great hunting troops to destroy the wild animals which infested the forests and did much damage, bears, wolves, wild hogs and buffaloes making the forests dangerous to travelers."

Now that they had heard this story of the river, they took keen interest in all that concerned it, especially the vessels upon its placid waters.

"They can carry great burdens," remarked Fritz, "more than many horses could pull."