It is, of course, of the first importance to get a person stricken by the sun at once into the shade, and as the temperature of the body is rarely excessive in such cases, cold locally applied to the head is of more importance than a general bath, which, indeed, unless carefully watched, is apt to make matters worse, by driving the blood from the surface and so increasing the congestion of the brain and other internal organs. Hence it is better to apply ice to the head and to confine oneself to sponging the extremities as a measure for reducing the general temperature. In climates where insolation is common, there is little risk in getting wet, and hence if no proper ice bag be obtainable the ice, roughly crushed, may be applied to the head, simply tied up in a towel. Anyone who has suffered from even a mild attack of insolation remains for a long time specially sensitive to the effects of the sun, and therefore requires, for a long time, to be especially careful in avoiding exposure. When prolonged exposure to the sun at its fiercest must be braved, as in big game shooting, it is well to protect the spinal column by means of a pad worn outside the coat. Some persons are much more sensitive to the effects of the sun playing on the back than others, and though the precaution cannot be considered universally necessary, no one who feels himself inconvenienced by the effects of the sun on this part of the body should neglect the warning and fail to provide himself with a suitable protection. The usual plan is to have made a pad, cut to the shape of the back piece of the coat, of quilted cotton wool, covered with the same material as that of the coat and secured by buttons suitably placed. The third form of “stroke” is that of heat, and appears to be due simply to the inability of the regulating powers of the system to keep down the temperature of the body to the normal level. Unlike true sunstroke, it nearly always occurs at night, when the resisting powers of the organism are reduced to their minimum, and mostly under conditions in which the sleeper has inadequate air room, such, for example, as in crowded barracks and closely-packed railway compartments. Such cases may possibly occur, but personally I cannot recall an instance of this accident occurring to persons sleeping in the open air. Every year one reads in the Indian press of persons being taken dead out of railway carriages, and perhaps of a number of cases occurring simultaneously in a single barrack, but with adequate air space such an occurrence is, to say the least of it, exceptional.