“…According to some, it is almost invariably of rheumatic origin (Karsner and Koletsky, 1947) (Levine, Stein, Gordon and Mitchell, 1951); incomplete aortic rupture (Peery, 1942), in which a tear in the aortic intima just above the aortic valve allows the adjacent cusp to prolapse into the left ventricle in diastole; giant-cell (temporal) arteritis; and aortitis in ankylosing spondylitis (Clark, Kulka, and Syphilitic heart disease is now comparatively uncommon at any age, but in recent series about onethird of cases have been over 60 years of age (Macfarlane, Swan, and Irvine, 1956; Leonard and Smith, 1957). It is commoner in old men than in old women, and rare over the age of 80 (Bedford and Caird,I960).…”