For some weeks after his entry into Bloemfontein, Lord Roberts was unable to arrange for the direct relief of Mafeking by a column specially detailed for the purpose. He had originally intended that this should be done by Methuen, but subsequently ordered him to operate in the Free State on the left flank of the advance on the Transvaal. He hoped to apply his favourite method of an automatic relief, brought about by external pressure elsewhere. At the end of April, however, when it had become an urgent matter, he ordered Hunter, who had recently arrived at Kimberley from Natal, to send out a mounted force under Mahon, following it himself with the rest of the Xth Division. He left Kimberley on May 3, and on the following day Mahon set out from Barkly West on his 230 miles' march to Mafeking. Mahon advanced wide of the railway up the Hart's River, which joins the Vaal at Barkly West, his right flank being covered by Hunter, who kept close to the Vaal. Mahon met with no serious resistance until he had covered 200 miles of his journey, when he found a, force which had been sent down from Mafeking across his path, and which diverted him to Massibi; where he joined Plumer on May 15. The advance of the main and less mobile body under Hunter was aided by demonstrations made by Methuen from Boshof. With three columns claiming their attention the bewildered Boers were unable to do more than offer a stout but ineffectual resistance to Hunter on the Vaal on May 5. Two days later he occupied Fourteen Streams and restored the railway communication across the Vaal, having during his halt taken possession of Christiana, a village in the Transvaal a few miles up the river. It was now no longer necessary for him to hurry after Mahon, and his advance northwards was made at leisure. Early in June he occupied Lichtenburg, where Mahon rejoined him. Mafeking as well as Kimberley were now in the hands of Lord Roberts, but the Western line joining them to Capetown was not yet secure. The districts of Cape Colony west of De Aar and Hopetown were remote and backward, and sparsely inhabited by discontented and unprosperous Dutch farmers. Nearly a year before, while the Cape Government was placidly blinking under the shadow of Table Mountain and only taking action that thwarted the attempts of the Imperial Government to prepare for war, and like the unjust steward intriguing for reception in Boer houses if the Empire should fail, arms had been sent into these districts by the Boers of the Republics, and courses of instruction in the use of them were actually being held.