In three weeks, the sick of the army exceeded one thousand. A considerable number of ophthalmic cases appeared, but the prevailing disease was fever. In every corps it prevailed, and very few escaped it. In general it was of short duration, of two, three, or five, days at most, and rarely proved fatal. Ghiza appeared then to have been an unhealthy quarter, and the ground of the encampment was found to be swampy. We found the 89th regiment in garrison at this place, and so very sickly was that corps, that they could not muster fifty men on the parade. The sick of the army was sent into Ibrahim Bey fort, pleasantly situated on the bank of the river on the Cairo side. It had been occupied by the enemy as an hospital, and had been completely fitted up by them for the purpose. But it was neither (if accounts could be believed) a healthy nor a safe situation. A little before our arrival, the French had some cases of the plague in a ward of this hospital. On hearing this, every measure of precaution was taken, and the disease did not appear. It was remarked, that those sent to the hospital, ill of ophthalmia, dysentery, and hepatitis, rarely left it without an attack of the prevailing fever. About the end of the month, preparations were making to embark the army for Rosetta, and not less than twelve hundred sick were embarked. During the month the wind was most frequently from the N. The thermometer on the Nile, from the 1st to the 8th, was higher than we had found it at Ghenné. In the fort of Ibrahim Bey it moved from 80° 50″ to 90°. The sickness of the month was very considerable. Though we lost several men, yet the loss bore but a small proportion to the sickness that prevailed. Much of the sickness, and many of the deaths which subsequently occurred, we could trace to the situation near Cairo. Many cases of hepatitis did not appear, but of late many of dysentery; and, in some corps before quitting Cairo, ophthalmia prevailed very generally. SEPTEMBER. Early in this month, the greater part of the army was encamped in the neighbourhood of Rosetta. The 86th regiment and two companies of the 7th Bombay regiment went into garrison at Ghiza. Separate regimental hospitals were provided for every corps in Rosetta: but the number of sick appeared to be gaining ground, particularly the cases of ophthalmia, which disease was nearly confined to the 10th and 88th regiments. The number occurring in the artillery, 61st and 80th regiments, was inconsiderable; and the disease was very rarely seen among the Sepoys. Dysentery and hepatitis prevailed very generally in every corps; but the appearance of another disease occasioned the greatest alarm throughout the army.