a point where he was able to keep this house under observation. At about noon on that day he saw the four defendants drive up to this house in an automobile. Andrews unlocked a padlock on one door of the house and replaced the padlock after Marshall, Hyman and Scott had entered that door. He then went around and entered the house by another door. After waiting a few minutes this officer walked down the alley and through an opening in the fence, which opening was about five feet from the house, and approached an open window which faced the alley. He saw Andrews, Marshall and Hyman seated close together on a divan and Scott seated in an overstuffed chair, facing them. Scott was about three feet fromthe other three, and there was a vanity stool between him and the other three. They were all about 14 feet from the window at which this officer was standing. As this officer stood at the window he saw a spoon, the bottom of which was black from soot or smut, a medicine dropper with a hypodermic needle attached leaning against an ash tray, and a pile of papers folded like a "bindle fold," in the manner in which narcotic users fold a paper when they have placed heroin in it. All of these articles were on the vanity stool about which the defendants were seated.
 This officer then climbed through the window and told the defendants to keep their seats. A split second later he saw Marshall