_Treatment._—When a larval tick is found half buried in the skin, force should not be used in an attempt to remove it, because either the surrounding skin is unnecessarily damaged or, as is most probable, the head of the tick is ruptured, its rostrum or beak remaining buried in the skin. The result is severe irritation which may lead to septic infection. The best way, therefore, of dealing with a tick larva lodged in the skin is to dip a small camel’s hair brush in turpentine, benzene, petrol or paraffin, and apply it between the skin and the under surface of the tick. In a short time the tick will let go its hold and may be swept from the skin with the brush. Vaseline is also effective if smeared over the tick. To remove a rostrum which remains in the skin after a tick has been forcibly ejected, cocaine should be applied to the spot, and the rostrum extracted with needle forceps, iodine being thereafter applied. A special form of tick-case devised for dealing with this condition is upon the market, and is a useful addition to the traveller’s outfit. _Ants._—These are often very troublesome owing to their depredations on foodstuffs, and it must be remembered that experimentally ants have been shown capable of carrying the organisms of typhoid fever and cholera, though under ordinary conditions they are not likely to be very dangerous in this respect. Some form of pyrethrum powder, such as Keating’s, will be found useful in checking the depredations of ants, or they can be prevented from getting at food on tables by tying paraffin-soaked rags round the legs of the latter. Powdered borax or paraffin are useful in dealing with so-called “ant-routes” into tents or houses. _Iritis, or Inflammation of the Eyeball Itself._ _Symptoms._—In this there is pain, the vision is dimmed, and the transparent part of the eye is found to be cloudy. Skilled assistance is necessary. _Treatment._—Apply hot fomentations and boric acid lotion; leeches or a blister to the temples are of service, and the pupil, which is contracted, should be dilated by dropping two or three drops of a one per cent. solution of atropine on to the eye twice a day or oftener till it is well dilated; only enough drops should be applied afterwards to prevent the pupil from contracting. Dark glasses may be worn with advantage. The bowels should be kept well open, and one grain of calomel may be given three times a day for a week, or longer if it does not cause a coppery taste in the mouth, with tenderness of the gums and excessive flow of the saliva. As the inflammation subsides a shade may be adopted. [Illustration: FIG. 2.]