They were proceeding so easily and comfortably on their way to Mount Munch that Woot said in a serious tone of voice:
"I'm afraid something is going to happen."
"Why?" asked Polychrome, dancing around the group of travelers.
"Because," said the boy, thoughtfully, "I've noticed that when we have the least reason for getting into trouble, something is sure to go wrong. Just now the weather is delightful; the grass is beautifully blue and quite soft to our feet; the mountain we are seeking shows clearly in the distance and there is no reason anything should happen to delay us in getting there.
Our troubles all seem to be over, and -- well, that's why I'm afraid," he added, with a sigh.
"Dear me!" remarked the Scarecrow, "what unhappy thoughts you have, to be sure. This is proof that born brains cannot equal manufactured brains, for my brains dwell only on facts and never borrow trouble. When there is occasion for my brains to think, they think, but I would be ashamed of my brains if they kept shooting out thoughts that were merely fears and imaginings, such as do no good, but are likely to do harm."
"For my part," said the Tin Woodman, "I do not think at all, but allow my velvet heart to guide me at all times."
"The tinsmith filled my hollow head with scraps and clippings of tin," said the Soldier, "and he told me they would do nicely for brains, but when I begin to think, the tin scraps rattle around and get so mixed that I'm soon bewildered. So I try not to think. My tin heart is almost as useless to me, for it is hard and cold, so I'm sure the red velvet heart of my friend Nick Chopper is a better guide."
"Thoughtless people are not unusual," observed the Scarecrow, "but I consider them more fortunate than those who have useless or wicked thoughts and do not try to curb them. Your oil can, friend Woodman, is filled with oil, but you only apply the oil to your joints, drop by drop, as you need it, and do not keep spilling it where it will do no good. Thoughts should be restrained in the same way as your oil, and only applied when necessary, and for a good purpose. If used carefully, thoughts are good things to have."
Polychrome laughed at him, for the Rainbow's Daughter knew more about thoughts than the Scarecrow did. But the others were solemn, feeling they had been rebuked, and tramped on in silence.
Suddenly Woot, who was in the lead, looked around and found that all his comrades had mysteriously disappeared. But where could they have gone to? The broad plain was all about him and there were neither trees nor bushes that could hide even a rabbit, nor any hole for one to fall into. Yet there he stood, alone.
Surprise had caused him to halt, and with a thoughtful and puzzled expression on his face he looked down at his feet. It startled him anew to discover that he had no feet. He reached out his hands, but he could not see them. He could feel his hands and arms and body; he stamped his feet on the grass and knew they were there, but in some strange way they had become invisible.
While Woot stood, wondering, a crash of metal sounded in his ears and he heard two heavy bodies tumble to the earth just beside him.
"Good gracious!" exclaimed the voice of the Tin Woodman.
"Mercy me!" cried the voice of the Tin Soldier.
"Why didn't you look where you were going?" asked the Tin Woodman reproachfully.
"I did, but I couldn't see you," said the Tin Soldier. "Something has happened to my tin eyes. I can't see you, even now, nor can I see anyone else!"
"It's the same way with me," admitted the Tin Woodman.
Woot couldn't see either of them, although he heard them plainly, and just then something smashed against him unexpectedly and knocked him over; but it was only the straw-stuffed body of the Scarecrow that fell upon him and while he could not see the Scarecrow he managed to push him off and rose to his feet just as Polychrome whirled against him and made him tumble again.
Sitting upon the ground, the boy asked:
"Can you see us, Poly?"
"No, indeed," answered the Rainbow's Daughter; "we've all become invisible."
"How did it happen, do you suppose?" inquired the Scarecrow, lying where he had fallen.
"We have met with no enemy," answered Poly-chrome, "so it must be that this part of the country has the magic quality of making people invisible --even fairies falling under the charm. We can see the grass, and the flowers, and the stretch of plain before us, and we can still see Mount Munch in the distance; but we cannot see ourselves or one another."
"Well, what are we to do about it?" demanded Woot.
"I think this magic affects only a small part of the plain," replied Polychrome; "perhaps there is only a streak of the country where an enchantment makes people become invisible. So, if we get together and hold hands, we can travel toward Mount Munch until the enchanted streak is passed."
"All right," said Woot, jumping up, "give me your hand, Polychrome. Where are you?"
"Here," she answered. "Whistle, Woot, and keep whistling until I come to you."
So Woot whistled, and presently Polychrome found him and grasped his hand.
"Someone must help me up," said the Scarecrow, lying near them; so they found the straw man and sat him upon his feet, after which he held fast to Polychrome's other hand.
Nick Chopper and the Tin Soldier had managed to scramble up without assistance, but it was awkward for them and the Tin Woodman said:
"I don't seem to stand straight, somehow. But my joints all work, so I guess I can walk."
Guided by his voice, they reached his side, where Woot grasped his tin fingers so they might keep together.
The Tin Soldier was standing near by and the Scarecrow soon touched him and took hold of his arm.
"I hope you're not wobbly," said the straw man, "for if two of us walk unsteadily we will be sure to fall."
"I'm not wobbly," the Tin Soldier assured him, "but I'm certain that one of my legs is shorter than the other. I can't see it, to tell what's gone wrong, but I'll limp on with the rest of you until we are out of this enchanted territory."
