the exact size of te panels—and a little over two feet long, or the depth of the two mantels and the wall. It was originally used, I imagine, for private communication between the two rooms. But that point is immaterial. The fact remains that such a shaft exists—I verified it to-night on my way down-town from the hospital. I might also add that the panel at either end of the shaft is on a spring hinge, so that when it is opened and released it closes automatically, snapping back into place without giving any indication that it is anything more than a solid part of the woodwork"
"I get you!" exclaimed Heath, with the excitement of satisfaction. "Rex was shot by the old man-killing safe idea: the burglar opens the safe door and gets a bullet in his head from a stationary gun."
"Exactly. And the same device has been used in scores of murders. In the early days out West an enemy would go to a rancher's cabin during the tenant's absence, hang a shotgun from the ceiling over the door, and tie one end of a string to the trigger and the other end to the latch. When the rancher returned—perhaps days later—his brains would be blown out as he entered his cabin; and the murderer would, at the time, be in another part of the country."
"Sure!" The Sergeant's eyes sparkled. "There was a shooting like that in Atlanta two years ago—Boscomb was the name of the murdered man. And in Richmond, Virginia"
"There have been many instances of it, Sergeant. Gross quotes two famous Austrian cases, and also has something to say about this method in general."
