'In the times of our early Kings, when they moved from place to place, it devolved upon the Marshal of the King's household to find lodgings for the royal retinue and dependents, which was done by sending a billet and seizing arbitrarily the best houses and mansions of the locality, turning out the inhabitants and marking the houses so selected with chalk; which latter duty seems to have belonged to the Serjeant-Chamberlain of the King's household. The city of London, fortunately for the comfort and independence of its inhabitants, was exempted by numerous charters from having to endure this most abominable annoyance at such times as it pleased the King to become its near neighbour by taking up his residence in the town.'[124] By an Act (7 Edw. VI.) 1553 forty taverns and public-houses were allowed in the city and three in Westminster. CHAPTER VII _Health, Disease and Sanitation_[125] When I mentioned to a friend that I intended to devote one of the chapters of this book to the consideration of sanitation in the Middle Ages, he hinted that as there was no such thing this would partake somewhat of the character of the famous chapter on Snakes in the _History of Ireland_. In this opinion I hope to prove that he is wrong. There are many conflicting accounts of the general sanitary condition of a walled town in the Middle Ages, but although some have painted the condition of early London in a very unfavourable light, there is sufficient evidence on the other side to induce us, in taking a general survey of so large a subject, to be careful not to use too dark colours for our picture. Probably the town was healthier in ordinary times than the country, because the regulations were stricter, but in time of pestilence it was doubtless worse, from the confined space and the want of fresh air, caused by the closeness of buildings. We do not hear much of the health of London between the periods of pestilence, but occasional information shows how great was the mortality among infants. The vast disproportion between the births and deaths made the influx of immigrants from the country necessary to keep up the population. As a sign that the general conditions of life were unhealthier then than now, we may note that the expectancy of life in the Middle Ages was much shorter than at present. It is said that as large a number of persons died at forty years of age as now live to seventy. Queen Elizabeth was the first of the twenty-three sovereigns of England after the Conquest who attained the age of seventy, although Edward I indeed lived to his sixty-ninth year. Dr. Jessopp gives a vivid picture of the frightful condition of town populations. He writes: 'The sediment of the town population in the Middle Ages was a dense slough of stagnant misery, squalor, famine, loathsome disease and dull despair, such as the worst slums of London, Paris or Liverpool know nothing of.'[126]