By this time all the gaols in England were filled with the refuse of the army and navy, which having been dismissed at the peace, and either averse to labour or excluded from employment, had naturally preyed upon the commonwealth. Great numbers of those wretches who, by proper regulations, might have been rendered serviceable to the community, were executed as examples; and the rest perished miserably, amidst the stench and horrors of noisome dungeons. Even the prison of Newgate was rendered so infectious by the uncommon crowds of confined felons stowed together in close apartments, that the very air they breathed acquired a pestilential degree of putrefaction. It was this putrefied air, which, adhering to the clothes of the malefactors brought to trial at the bar of the Old Bailey, in May, produced among the audience a pestilential fever, which infected and proved fatal to the lord mayor of London, to one alderman, two of the judges, divers lawyers who attended the session, the greatest part of the jury, and a considerable number of the spectators. In order to prevent such disasters for the future, the gaols were cleansed, and accommodated with ventilators, which exhaust the foul and supply a circulation of fresh air; and other humane precautions were taken for the benefit of the prisoners.