In these disorders an injection containing sulphate of copper, 1 to 2 gr. in the ounce, is often a useful alternative to injections of zinc or lead, or it may be combined especially with the acetate of lead. Dewees and also Diday have shown the value of cupric injections in such cases (Archives Gen., xviii., p. 385), and Dr. P. Foster has more recently illustrated the same (Medical Times, ii., 1873). In balanitis a copper lotion is useful.