Sec. 153. People may be affected with the Disease from this Cause, at two different Seasons of the Year; that is, either in the Spring, or during the very raging Heats; but their Events are very different. Country People and Labourers are but little liable to the former. They chiefly affect the Inhabitants of Cities, and delicate Persons, who have used very little Exercise in the Winter, and abound with superfluous Humours. If thus circumstanced they expose themselves to the Sun, as even in the Spring he attains a considerable Force; and, by the Course of Life they have led, their Humours are already much disposed to mount to the Head; while the Coolness of the Soil, especially when it has rained, prevents their Feet from being so easily warmed; the Power of the Sun acts upon their Head like a Blister, attracting a great Quantity of Humours to it. This produces excruciating Pains of the Head, frequently accompanied with quick and violent Shootings, and with Pain in the Eyes; notwithstanding this Degree of the Malady is seldom dangerous. Country People, and even such Inhabitants of Cities and Towns, as have not forbore to exercise themselves in Winter, have no Sort of Dread of these Strokes of the Sun, in the Spring of the Year. Its Summer Strokes are much more vehement and troublesome, and assault Labourers and Travellers, who are for a long Time exposed to the Fervour of it. Then it is that the Disease is aggravated to its highest Pitch, those who are thus struck often dying upon the Spot. In the hot Climates this Cause destroys many in the very Streets, and makes dreadful Havock among Armies on the March, and at Sieges. Some tragical Effects of it, on such Occasions, are seen even in the temperate Countries. After having marched a whole Day in the Sun, a Man shall fall into a Lethargy, and die within some Hours, with the Symptoms of raving Madness. I have seen a Tyler in a very hot Day, complaining to his Comrade of a violent Pain in his Head, which increased every Moment almost; and at the very Instant when he purposed to retire out of the Sun, he sunk down dead, and fell down from the House he was slating. This same Cause produces very often in the Country some most dangerous Phrenzies, which are called there hot or burning Fevers. Every Year furnishes but too many of them.