Show MACHINE RECORDS MOTIONS OF HEART CHICAGO Sept 29 A A machine which records every motion of or the heart was exhibited toda today before beCore the convention of the American X Ray society It Tt is called an electrocardiograph electrocardiograph electrocardiograph graph and b by Its Us us use it was explained physicians may obtain records which are exact and which may be compared com corn pared later with other records in preparing preparing pre pre- paring a a. diagnosis of ot certain heart rl disease i rEal |