“What’s that?” asked Arnold.

“It’s the same thing that happens when a horse is overworked, allowed to drink all the water he wants and then stand. The blood vessels in the feet are injured. The blood from the arteries passes through tiny blood vessels, called capillaries, into the veins and back to the heart. These little blood vessels are permanently damaged and the coffin joint, inside the hoof, suffers and drops out of position. The sole of the foot also drops. You can help mild cases of founder, but the horse is never up to much except very light work. Even if he recovers he is usually lame until his blood warms up.”

“What can we do to prevent it?” asked Mr. Meadows while Jim listened anxiously.

“Well, building that padded barricade will give him a chance to lean against it and rest. Also, it helps to groom the horse and massage his legs. Don’t touch the broken leg at all for a few days though. Beyond that there isn’t much that can be done but hope for the best.”

The veterinarian waited until Ticktock awoke, and then lowered him until his feet touched the ground lightly. At first the pony was very groggy and dopey, but as his head cleared he started to struggle. He could not understand why he was hanging in the air and was unable to walk.

“There, there, old boy. You’re all right now,” said Jim consolingly, patting the mustang on the head.

There was nothing further that Dr. Cornby could do. As it was after three o’clock in the morning, he and the editor prepared to leave. As Dr. Cornby wearily packed his bag, Jim awkwardly tried to express his thanks. He was so grateful that he could find no words adequate to convey the depth of his feeling.

“I know how you feel, Jim,” said Dr. Cornby. “Just forget about it and save all your energies for the days ahead. You’re going to need all you’ve got.”

Jim firmly refused to leave his pony’s side, insisting that he was going to sit up the remainder of the night beside the injured animal. “He might want some water,” he said, “or he might get scared and start kicking.”