SHOCKS FOR ALL AT THE ROYAL INSTITUTION
... A DRAMATIC MOMENT IN THE HALF-DARKENED LECTURE THEATRE OF THE ROYAL INSTITUTION Dr. P. Dunsheath points out to his young audience the operation of a machine which registers and measures heart-beats on a cardiagraph, the pulsations being manifested by electrical sparking in full view of the audience. This was one of many highlights as Dr. Dunsheath began the 120th course I ui J i A icciu co ...