IT took them two days to reach the river. The very first thing that struck the knight's eye when he got there, was a boat without oars, tied to a tree. Immediately Don Quixote insisted that the boat had been sent by magic to fetch him to some great knight or other person in need of his help; and all Sancho's contradictions were fruitless.
Finally the proverb, "Do as thy master bids thee, and sit down to table with him," had its effect on Sancho, and, although certain he was about to give up his life, he tied the beasts to a tree on the bank, and seated himself in the boat, trembling like a leaf. Then the knight cut the rope, and they started to drift out into the stream, while Dapple was braying and Rocinante was trying to break away and plunge in after them. Seeing this, Sancho began to weep convulsively, but his master had no patience with him, and told him to control himself.
Soon they had reached midstream, and Don Quixote, much to Sancho's perplexity, began to talk about cosmography, the three hundred and sixty degrees of the globe, and the equinoctial line, which, the knight said, they were just then passing. A sure sign by which all seafaring Spaniards determined the passing of this latitude, Don Quixote went on, was that all lice died on everybody on board ship. So, in accordance with this custom, he asked his squire to take the test. Sancho let his hand creep stealthily into the hollow of his left knee, and he promptly told his master that either was the test not to be relied upon, or they had not passed the line that had just been mentioned by name.
"Why, how so?" asked Don Quixote; "hast thou come upon aught?"
"Ay, and aughts," replied Sancho, and in replying he let the stream wash his fingers.
Just then they came in view of some large floating mills, moored in midstream. At once Don Quixote became excited, crying to Sancho that there must be some fair princess or high-born lady in captivity in this castle.
Sancho did his best to make his master believe they were not castles but only mills that ground corn; but to no avail. Don Quixote insisted that either his squire or the mills were enchanted. They came closer and closer to them, and soon shouts were heard from some of the millers, who realized the danger of the boat's being upset by the suction of the water, and dragged into the mill wheels.
The men quickly got hold of some sticks and poles, and tried to stave off the boat, and when Don Quixote saw their white, flour-covered faces he turned to Sancho and begged him to take a good look at the monsters that had been sent to oppose him. The men were all the time crying out, unable to fathom such dare-deviltry or folly: "Devils of men, where are you going to? Are you mad? Do you want to drown yourselves, or dash yourselves to pieces among these wheels?"
In reply to these well-meant exclamations, Don Quixote stood up in the boat and began to swing his sword in a ferocious manner, calling them evil rabble, and demanding that they set free the princess who was imprisoned in the fortress; while Sancho said all the prayers he could think of, crawling on the bottom of the swaying boat, which was now close to the rushing water.
At last the millers caught the boat with their hooks, but in so doing Don Quixote and his squire both fell into the river. Don Quixote in his heavy armor made two trips to the bottom, but both he and Sancho were rescued, thanks to the devils in white. As soon as they had come ashore, Sancho sank upon his knees and thanked the Lord for having been saved from such a death as that from drinking too much water, and prayed that he should be delivered from all future temptations to risk his life in any more foolish causes.