“As Ireland is subject to most diseases in common with other countries, so there are some whereunto it is peculiarly obnoxious, being at all times so rife there that they may justly be reputed for Ireland _endemii morbi_, or reigning diseases, as indeed they are generally reputed for such. Of this number is a certain sort of malignant feavers, vulgarly in Ireland called Irish agues, because that at all times they are so common in Ireland, as well among the inhabitants and the natives, as among those who are newly come thither from other countries. This feaver, commonly accompanied with a great pain in the head and in all the bones, great weakness, drought, loss of all manner of appetite, and want of sleep, and for the most part idleness or raving, and restlessness or tossings, but no very great nor constant heat, is hard to be cured.” If blood-letting be avoided and cordial remedies given, “very few persons do lose their lives, except when some extraordinary and pestilent malignity cometh to it, as it befalleth in some years.” Those who recover “are forced to keep their beds a long time in extreme weakness, being a great while before they can recover their perfect health and strength.” The occasion of Boate’s writing was the subjugation of Ireland by Cromwell, in the course of which we hear from time to time of sickness. The greatest of the calamities was the utter destruction of the prosperity of Galway by the frightful plague of 1649-50, and by the suppression of the Catholics, who had brought the port of Connaught to be a place of foreign commerce[417]. Cromwell’s troops in 1649 incurred dysentery through the hardships of campaigning. On 17 September, 1649, the Lord General writes from Dublin to Mr Speaker Lenthall after the storming of Tredah or Drogheda: “We keep the field much; our tents sheltering us from the wet and cold. But yet the country-sickness overtakes many: and therefore we desire recruits, and some fresh regiments of foot, may be sent us.” And on 25 October, “Colonel Horton is dead of the country-disease[418].” Another general reference to the “country disease” of Ireland, by Borlase, is very nearly the same as Boate’s. It is introduced early in the history, on the occasion of the death in 1591 of Walter, Earl of Essex, earl marshal of Ireland: