Pamela felt acutely that water was impossible. Then an idea occurred to her--very inadequate, but still something. She spread her handkerchief on the grass--saw that it began to get damp at once--and so left it for a minute, weighted with a little lump of soil, while she looked at the leg.

The obvious injury was a swollen and bruised knee, very blue, and growing bluer. But what she feared more was the appearance of the ankle. The child was wearing rather clumsy laced boots, too large for him, probably his brother's boots. It was probable that the boot had twisted, wrenching the ankle. Pamela hoped that it was only a bad sprain--not a break or a dislocation, but she did not know. The foot certainly looked queer. She wondered if she ought to take the boot off. But the laces were knotted in more than one place, and a terror of interfering seized her.

"If only I knew first aid," she thought miserably.

The moment she got a chance she would learn the whole thing. Therein lay another immense advantage of being a real Guide. She would have known exactly what to do. But ignorant handling might make things very much worse. She moved the foot cautiously, Reube shrank and winced.

She was sure it looked all wrong. Suppose it was broken--what awful pain!

Pamela returned to examination of her handkerchief. It was quite wet--really wet. She pressed it between the child's lips, feeling hopeful.

"Suck it, Reube," she said, "it isn't much, but it might make you feel a wee bit better."

Then she remembered that soldiers sucked pebbles when they were very hard put to it from thirst in front-line trenches. She considered the advisability of giving Reube a wet pebble to suck--if she could find one--there seemed to be none in the least suitable. After all, suppose Reube swallowed the pebble in a moment of half consciousness! That would be worse than anything. She returned to a very settled conviction that the important thing in life was to know first aid, and belong to the Girl Guides, when you would be armed with practical knowledge of what to do in all circumstances.

Reuben seemed the least bit revived. Whether it was the result of her company or of the handkerchief one could not tell, but the time seemed to have come to make a real start, if they were ever to get up the mist-veiled height above them.

From then on--for possibly twenty minutes, when she was completely played out--poor Pam remembered afterwards as a nightmare of the worst kind.