Examination.-The patient appeared to be in good general health. X-ray of the chest was normal. There was a discharge from the right ear due to a chronic otitis media. Culture of material from the ear showed Staphylococcus pyogenes (coagulase positive). Projecting from behind the middle of the margin of the left lower eyelid was a small, irregular, reddish tumour about the size of a pea (Fig. 1)...