Dr. Novy's Heart

Some interesting experiments in the use of X rays have been going on in the physical laboratory last week. By means of apparatus which Prof. Carhart is using in his experiments observers are enabled to examine bones of a man's body, seeing them with perfeot diatinctness. One of the most eurious experiments was made a few nights ago, when Dr. Novy acted as subject. The doctor allo wed the spectators to count his ribs, examine the condition of the stern um and clavicle and suddenly it was discovered that the heart was visible and that its pulsations could be watched and counted, The heart was misty in outline, not distinct like the bones, but there it was, moving regularly, and the spectator counted its pulsations while Dr. Herdman stood with his finger on Dr. Novy's pulse to verify the oount and make sure it was not the flickering of the light that misled the eye. An effort will be made after a while to fix a large screen in a doorway so that all of a large audience in a dark room can see the pictures simuitaneous ly. In this way the whole skeleton of a man may perhaps be shown at once and at the same time walking about.