Three months the British army lay upon the Ridge running obliquely from the north-west angle of Delhi--that abrupt height two miles long, whose steep and broken front formed a natural fortification, strengthened by batteries and breast-works, among which the prominent points were at a house known as Hindoo Rao's, on the right of the position, and the Flagstaff Tower on the left, commanding the road to the Cashmere Gate of the city. The rear was protected by a canal that had to be vigilantly guarded, all the bridges broken down but one. The right flank was defended by strong works crowning that end of the ridge; the left rested on the straggling sandy bed of the Jumna, over-flooded by summer rains. The whole army, after the arrival of reinforcements in June, numbered not six thousand fighting men, a force barely sufficient to maintain such an extended line, even if a fifth of them had not been in hospital at once. Yet they not only held their own, but pushed their outposts far across the debatable plain between them and the city, seizing on the right an important point in the "Sammy House," the soldiers' slang name for a temple, and on their left recovering the grounds of Metcalf House, a splendid mansion that for weeks had been given up to the destructive hands of the rebels, who here spoiled one of the finest libraries in India. As already pointed out, this was a complete reversal of the ordinary conditions of warfare. An army far inferior in numbers to its enemy attacked one corner of a city, six miles in circumference, open on all other sides to supplies of every kind, while the besiegers had much ado to keep up their own communications through a disturbed country, besides defending themselves against almost daily sallies of the nominally besieged. They were sorely tried by sickness, by deadly heat, then by wet weather that turned the river into an unwholesome swamp, and by a plague of flies swarming about the camp, with its abundant feast of filth and carrion. They were ill-provided with the means to carry on their urgent enterprise. Their lines were filled with spies among the native soldiers and camp-followers, who, at the best, only half wished them well. Everything they did, even what was designed in secret, seemed to be known presently at Delhi, so that the garrison were found prepared for all our movements; and thus the fresh plan of an assault in July had to be given up.