_Treatment._—Mild cases are best treated by using an ointment containing resorcin two drachms, salicylic acid ten grains, and vaseline and lanoline, of each four drachms. The parts may be painted with iodine but this is somewhat irritating. An ointment of ammoniated mercury, two to five per cent., is often effective. Bad cases require the application of araroba (chrysarobin) ointment, but it should not be used unless recommended by a doctor. Goulard water or Wright’s liquor carbonis detergens (one tablespoonful to two pints of water) are soothing applications. (2) There is a fungus disease of the hairs, especially of the armpits and the pubis, which occurs in tropical climates and is often very troublesome. The hairs assume a coated, beaded or nodular appearance and the deposit on them varies in colour and may be black, yellow or red. The underclothing in contact with the affected parts becomes stained and when the disease spreads to the skin, as it often does, the latter becomes inflamed, thickened and painful. _Prophylaxis._—Keep the axillae shaved. It is always well to do so in a tropical climate. Failing this, dust with a mixture of powdered sulphur and fuller’s earth, equal parts. Change the underclothing frequently and bathe the parts liable to infection. _Treatment._—Apply twice daily a lotion containing one drachm of formalin in six ounces of rectified spirit, and at night rub in a two per cent. sulphur ointment. If these measures fail apply tincture of iodine, except in cases where the skin is involved. In such cases bathe with cold water and employ a dusting powder or a soothing lotion. (3) _Ringworm_ of the head is a disease due to a fungus. The part for some distance round the affected area should be shaved, and any stumps of hairs pulled out. The skin should be lightly painted with tincture of iodine or strong solution of carbolic acid (one in ten of water); or sulphur, white precipitate, or mercurial ointment may be gently rubbed in. _Kraw-Kraw._—This is a term commonly employed by natives of the West Coast of Africa to indicate almost any kind of itchy, papular, or pustular eruption. Many of these appear to be contagious, and most of them are best treated by opening up any pustules which may be present, removing crusts by boric poultices, and scraping ulcers. Then scrub thoroughly with sublimate lotion 1 in 1,000, dust with boric powder and apply a dressing of medicated vaseline. The application should not be disturbed for a week when, as a rule, the skin will be found to have healed up. Clothing and any other articles which have been in contact with the affected parts should be destroyed or thoroughly disinfected.