There are several orders of Edward III. relating to the removal of laystalls and to keeping the town ditch clean, which show, of course, that there was neglect, but at the same time the disposition to correct it. It is farther obvious that the connexion between nuisances and the public health was clearly apprehended. The sanitary doctrines of modern times were undreamt of; nor did the circumstances altogether call for them. The sewers of those days were banked-up water courses, or “shores” as the word was pronounced, which ran uncovered down the various declivities of the city, to the town ditch and to the Thames. They would have sufficed to carry off the refuse of a population of some forty or sixty thousand; they were, at all events, freely open to the greatest of all purifying agents, the oxygen of the air; and they poisoned neither the water of the town ditch (which abounded in excellent fish within John Stow’s memory) nor the waters of Thames. In course of time all the brooks of London were covered in, even the Fleet dyke itself, which used to float barges as far as Holborn bridge; but who shall say that they were more wholesome thereafter, although they were underground? Perhaps the poet of the _Earthly Paradise_ has as true an intuition as any when, in reference to the city in Chaucer’s time, he bids us “Dream of London, small, and white, and clean; The clear Thames bordered by its gardens green.” The nuisance that gave most trouble in the medieval and Tudor periods was the blood and offal of the shambles. Several ordinances of Edward III. are directed against it, in one of which (1371) the connexion between putrefying blood soaked into the ground and infectious disease is clearly stated. It is also the principal subject of the first sanitary Act that appears in the Statutes of the Realm, made by the Parliament of Cambridge in the 17th of Richard II. (1388), of which I give the preamble and provisions: