"After taking these precautions, they dug holes and trenches for the use of the tufang-chis who were ordered to shoot down any Babis who might appear. They built large towers as high as the various levels of the fortress or even higher and, through a continuous plunging fire, they rendered the circulation of the Babis within their fort extremely dangerous. It was a decided advantage for the besiegers, but, in a few days, the Babi chiefs, taking advantage of the long nights, raised their fortifications so that their height exceeded that of the attacking towers of the enemy." (Ibid., p. 181.)