The chief part of the labour of road-making consisted in cutting down trees and removing stones. The country being covered with open forest, a small tree had to be cut about every fifty or sixty yards. The land near the river was so very much intersected by ravines, that search had to be made, a mile from its banks, for more level ground. Experienced Hottentot drivers would have taken Cape wagons without any other trouble than that of occasionally cutting down a tree. No tsetse infested this district, and the cattle brought from Johanna flourished on the abundant pasture. The first half-mile of road led up, by a gradual slope, to an altitude of two hundred feet above the ship, and a sensible difference of climate was felt even there. For the remainder of the distance the height increased,--till, at the uppermost cataract, we were more than 1200 feet above the sea. The country here, having recovered from the effects of the drought, was bright with young green woodland, and mountains of the same refreshing hue. But the absence of the crowds, which had attended us as we carried up the boat, when the women followed us for miles with fine meal, vegetables, and fat fowls for sale, and the boys were ever ready for a little job--and the oppressive stillness bore heavily on our spirits. The Portuguese of Tette had very effectually removed our labourers. Not an ounce of fresh provisions could be obtained, except what could be shot, and even the food for our native crew had to be brought one hundred and fifty miles from the Zambesi. The diet of salt provisions and preserved meats without vegetables, with the depression of spirits caused by seeing how effectually a few wretched convicts, aided by the connivance of officials, of whom better might have been hoped, could counteract our best efforts, and turn intended good to certain evil, brought on attacks of dysentery, which went the round of the Expedition--and, Dr. Kirk and Charles Livingstone having suffered most severely, it was deemed advisable that they should go home. This measure was necessary, though much to the regret of all--for having done so much, they were naturally anxious to be present, when, by the establishing ourselves on the Lake, all our efforts should be crowned with success. After it had been decided that these two officers, and all the whites who could be spared, should be sent down to the sea for a passage to England, Dr. Livingstone was seized in May with a severe attack of dysentery, which continued for a month, and reduced him to a shadow. Dr. Kirk kindly remained in attendance till the worst was passed. The parting took place on the 19th of May.