The service wagon (fig. 7) is a heavy four-wheeled vehicle, drawn by ten mules. The good construction of the wagon was amply proved by the manner in which it stood the hard wear and tear of the present campaign. It is, however, very heavy, and in comparison with its size affords very small accommodation. Two lying-down patients and six sitting is its entire capacity. Some modified patterns were in use, notably those with the Irish and Imperial Yeomanry Field Hospitals, capable of carrying four lying-down cases, the men being arranged in two tiers. Major Hale, R.A.M.C., made a very successful trek from Rhenoster to Kroonstadt with some of these, carrying twice the regulation number of lying-down cases in his wagons. Some modification in the mode of fixation is, however, necessary to increase the security of the stretchers of the upper series. A really satisfactory wagon, combining both strength and comfort, still remains to be devised. [Illustration: FIG. 7.--Service Ambulance Wagon, the six front mules removed. (Photo by Mr. C. S. Wallace)] During the later stages of the campaign, a very large number of patients were transported by the South African ox- or mule- (buck) wagons. Although not of prepossessing appearance, and unprovided with any sort of springs, these vehicles were far from unsatisfactory. The ox-wagon consists of a long simple platform, 19 ft. 2 in. in length, 4 ft. 6 in. in width, from the sides of which a slanting board rises over the wheels for the posterior two-thirds. These bulwarks increase the actual width to 6 ft. 6 in., which corresponds with the gross width occupied by the wheels. One third is covered by a small hood 5 ft. 6 in. in height erected on wooden stave hoops. The latter was often absent in transport wagons. The two hind wheels are large, the fore somewhat smaller. They are attached to very heavy wooden cross-beams bearing the axles, and the two beams are connected by a longitudinal bar, continuous with the duessel boom or pole. This latter bar is in two sections, the connection of which allows considerable play in the long axis and serves to break the jolts occurring when either pair of wheels passes over uneven spots on the ground. When some sacks of oats or hay were spread over the floor the wounded men travelled comparatively comfortably in these wagons, the great distance between the fore and hind wheels tending to minimise the jolting. The principal objection to them was the slow pace of the oxen, and the fact that to obtain the greatest amount of work from these animals a major part of the journey must be performed during the night. The ox-wagon carries, with comfort, four lying-down cases on stretchers, or six without stretchers; or twenty sitting-up cases. [Illustration: FIG. 8.--South African Wagon, loaded with patients, and mule transport. (Photo by Mr. C. S. Wallace)]