9. The =water-supply= of a town was a very important matter. Here, again, the monasteries and colleges frequently led the way, and showed how water might be brought by pipes from a distant spring. It was not an uncommon thing for water to be brought in this way to a "conduit" in the market-place, whence the people fetched it as they needed. Many a good wealthy citizen has performed the pious work of providing his town with a supply of water. Parts of old water-pipes, some of wood and some of lead, laid for such a purpose, have often been discovered in recent years. 10. Usually, however, a town had to depend upon wells for its water-supply; and with open gutters running through the town it is very easy to see that many of these wells supplied water which, at times, could not have been pure, however bright and clear it may have looked. 11. In the villages the dangers arising from want of proper drainage and from impure water were not quite so great as in the towns. Yet even now, in this twentieth century, how to drain our villages properly, and provide them with a good water-supply, are questions needing attention in many places. We have seen that the houses in the villages were usually close together, and men had not realized that dirt is one of the greatest enemies of mankind. There are a good many people, even in our time, who see no great harm in having pigsties, refuse-heaps, and manure-heaps close to their houses. 12. One of the most loathsome of the diseases common in the Norman times and later was =leprosy=. The lepers _were_ kept out of the towns, but at first very little was done for them. The refuse of the markets, and the food that was so bad that it had to be carted outside the town, was thought to be good enough for them. Gradually, however, we find =hospitals for lepers= established. They were not what we understand by hospitals, places where sick folk could be doctored and nursed and cured; they were religious houses which poor lepers might enter, and in which they might have safe shelter, care, and attention for the rest of their sad lives. They were always built outside the walls of the towns. 13. =Other hospitals= for poor and suffering people were also established. They were not large buildings, with wards holding scores of people. They were little religious houses, each with its chapel and priests to carry on its services, providing homes for small numbers--perhaps half a dozen or a dozen.