Traffic through the Canal was dependent to some extent also upon Battalion Headquarters. As has already been mentioned in an earlier chapter, one ship had been mined. Other mines had been located, and proof existed that enemy agents, under cover of darkness, were endeavouring to block the waterway. One method utilised to counter these measures was to sweep a track along the sand of the eastern bank. By means of a horse harnessed to logs and other material this was done daily before nightfall. At dawn patrols would examine the swept area, and if tracks of man or beast crossed it at any point these would be closely followed until their origin and purport had been explained. Reports were then sent to the Adjutant, and by 8 a.m. an "all clear" message went forward to Army Headquarters, which, in turn, informed the Canal officials that traffic could proceed without risk. Should, by any chance, this report be delayed the effect at Army Headquarters was remarkable, and the life of the responsible people at Ferry Post very unenviable for the next few hours. The Canal at Ferry Post was some 70 yards wide, and the depth believed to be something over 30 feet. Just below the ferry the water ran into Lake Timsah, which was irregular in form and measured about three miles from side to side. In this lake a few vessels were anchored, some of them being men-of-war--French and British--as auxiliary to the defence. On the bank opposite Ferry Post is a rocky plateau, upon which was a convent, or monastery, and some buildings used by the management of the Canal. Here, during February, Sir Archibald Murray established his headquarters. The town of Ismailia is situated near the north-western edge of the lake, and in 1916 contained about 12,000 inhabitants, one-fourth of which were foreigners, mostly French and Italians. The Australians found the place quite attractive, taking especial delight in the gardens, some of which contained the familiar bougainvillaea in full bloom, and in the shade afforded by the fine avenues of lebboks and magnolias. The native bazaar attracted those who had money to spend on local manufactures; whilst a very fine clubhouse afforded means for rest and refreshment to those officers whom leave or duty brought across the Canal. [Illustration: FERRY POST. Showing the Suez Canal where it enters Lake Timsah. Ismailia in the distance. _Photo. lent by Mr. Yeldon._] [Illustration: FERRY POST. The landing place on the East bank. General Legge waiting for the High Commissioner.]