Manson affirms that he has cured seventy-two cases of chorea by giving iodide of potash. Bardsley and Gibney make similar statements, but many of these cases would probably have come to a natural termination after six or seven weeks' rest, even without iodine. We are still much in the dark as regards the nature of chorea, and from a rational point of view iodine can only be recommended for it as likely to influence a scrofulous, rheumatic, or syphilitic taint.