The great event of the siege had been the discovery of certain strange flashes of light on the white walls of the church-tower; these, after puzzling many of the officers and soldiers, were at length brought under the notice of an officer of the naval brigade, who had been trained in the use of the heliograph, and he was able at once to explain the mystery. They were three days before they could contrive an apparatus, which could be worked, to reply. Fortunately an old mirror was found, and communication was opened. The effect of their renewed intercourse with the outer world, and of learning the preparations which were being made for their relief, acted more beneficially on the health of the imprisoned garrison than all the tonics the hospital could afford. Nevertheless between the commencement of the siege and the arrival of the relief thirty deaths had occurred. To the great regret of the garrison they found that it had been determined by the general to abandon the fort which they had held so long, as the whole force was required in Natal for operations in the veld in conjunction with the reinforcements on their way out. Before leaving, however, it was determined to strike another blow at Dabulamanzi, whose private residence had escaped at the time that his kraal was burnt. A small party of about 200 men therefore went out and fired the place without resistance. Ekowe was evacuated, and, having left a garrison at Ginghilovo, Lord Chelmsford retired with his force across the Tugela. Every day for the next fortnight news reached Newcastle of the arrival of one or more transports with reinforcements, and in a month from the date of the arrival of the first from England, seventeen transports came in, bringing more than 9000 soldiers and 2000 horses. The force consisted of two regiments of cavalry, 1250 sabres, two batteries of artillery with 540 men, 190 men of the Royal Engineers, six regiments of infantry, 5320 bayonets, draughts of the regiments already in the colony and Army Service Corps' men, 1200. Most of the regiments brought their equipments complete and ready for the field--tents, waterproof-sheets, cooking utensils, and camp stores. The Army Service Corps brought with them 100 light but strongly-built waggons. Among the arrivals was the Prince Imperial of France, who had come out as a volunteer. To convey the baggage and stores of so numerous a force an immense number of waggons was required, and a very urgent appeal was made to the loyalty of the colonists to furnish transport for the troops engaged in fighting their battles.