And slumped back, still unconscious!
Again the professor applied the carbonate of ammonium.
Again the results were the same.
The old man straightened.
"I do not like this," he clipped. "You had better tell me just what happened."
Mark shifted nervously under the scrutiny of the sharp blue eyes.
"Start at the beginning," the professor commanded. "I want to know from exactly what this 'fainting spell' resulted."
The younger man nodded slowly.
"It all began after you went to bed," he explained. "I said good-night to Elaine, then decided to step outside and have a smoke before I turned in myself.