crevice and made the effort to breathe a suffocating nightmare. Over all the tumultuous scene a torrid sun beat down from a cloudless sky, while its scorching rays, reflected from the fierce sand under foot, produced a heat so intolerable that even the tropical vegetation looked withered and dying. In this climate officers and men, gathered mostly from Northern posts, were to "acclimate" themselves for a tropical campaign--somewhere.

[Illustration: Skirmish Drill at Tampa.]

They never encountered as deadly a heat, nor a more pernicious climate, in Cuba nor in Porto Rico, than that of southern Florida. Its first effect upon men just emerging from a bracing Northern winter was akin to prostration. Then began to follow a decided tendency to languor; after this one was liable to sudden attacks of bowel troubles. The deadly malaria began to insidiously prepare the way for a hospital cot; the patient lost flesh, relish of food became a reminiscence, and an hour's exertion in the sun was enough to put a man on his back for the rest of the day. Exposure to the direct action of the sun's rays was frequently followed by nausea, a slight chill, and then a high fever. The doctors subsequently called this "thermal fever," which is suspected to be a high-sounding name calculated to cover up a very dense ignorance of the nature of the disease, because no one ever obtained any relief from it from them. Recurrence of the exposure brought recurrence of the fever, and, if persisted in, finally produced a severe illness.

One reason for this was that the troops continued to wear the winter clothing they had worn on their arrival. The promised "khaki" did not materialize. Some regiments drew the brown canvas fatigue uniform, but the only use made of it was to put the white blanket-roll through the legs of the trousers, thereby adding to the weight of the roll, without perceptible benefit to the soldier.

Such a climate, under such surroundings, was not conducive to original thought, prolonged exertion, or sustained study. Everybody felt "mean" and was eager for a change. Nobody wanted to listen to any new schemes. The highest ambition seemed to be to get out of it to somewhere with just as little delay and exertion as possible. It was at this juncture that the plan of organizing a Gatling gun battery was conceived, and the attempt to obtain authority began.

The Gatling gun is one of the two machine guns adopted in the land service of the United States. Not to enter into a technical description, but merely to convey a general idea of its working and uses, it may be described as follows:

The gun is a cluster of rifle barrels, without stocks, arranged around a rod, and parallel to it. Each barrel has its own lock or bolt, and the whole cluster can be made to revolve by turning a crank. The bolts are all covered in a brass case at the breech, and the machine is loaded by means of a vertical groove in which cartridges are placed, twenty at a time, and from which they fall into the receivers one at a time. As the cluster of barrels revolves each one is fired at the lowest point, and reloaded as it completes the revolution. The gun is mounted on a wye-shaped trunnion; the lower end of the wye passes down into a socket in the axle. The gun is pointed by a lever just as one points a garden hose or sprinkler, with the advantage that the gun can be clamped at any instant, and will then continue to sprinkle its drops of death over the same row of plants until the clamps are released. The axle is hollow and will hold about a thousand cartridges. It is horizontal, and on its ends are heavy Archibald wheels. There is also a heavy hollow trail, in which tools and additional ammunition can be stored. The limber resembles that used by the Artillery, and is capable of carrying about 9600 rounds of cartridges. The whole gun, thus mounted, can be drawn by two mules,