When he was alone he opened the bundle Socker had brought. It was a linen duster, and, as Jack saw several brown spots on it he uttered an exclamation of satisfaction.
With his knife he scraped some substance from the garment, and placed the particles in a test tube. Then, taking this with him, he went to the laboratory, where he remained for some time.
Late that afternoon Jack, who had avoided his chums, took a walk around the campus. As he came near a small building, where some of the students kept their motor cycles, one or two small automobile runabouts, and a few of the more well-to-do, their ponies, Jack assumed a slow and halting gait. He seemed to be limping from the effects of his sprained ankle.
"I wonder if he's around," he muttered to himself. "Socker said he was going to take a spin this afternoon, and it's about time for him to start, by all accounts."
As Jack neared the entrance to the combined garage and stable he saw a group of students approaching from an opposite direction. His limp became more decided than before.
"He's there!" he said softly to himself.
"Hello, Ranger!" exclaimed a number, as Jack passed them. He knew them fairly well, but was not intimate with them as they belonged to the "fast set," a good-enough crowd, but lads who had more spending money than was good for them.
"Hello!" called Jack in reply.
"What's the matter?" came several inquiries as the students noticed
Jack's limp.
"Turned on my ankle," was the reply. "A bit stiff yet."