Katiepune (Pune, Maharashtra, India) on 10/25/2009:

My horse hurt himself on his coronet, i.e the portion between his hoof and leg. After the usual applications of betedine etc., we applied powdered charcoal and his lameness disappeared within hours. I read this in John Dinsley's book, which I recommend to everyone as it contains a wealth of info on the various remedies of charcoal.