But there is another point of view in which this machine would have benefited the good woman and her family. Water is not only necessary to drink and to prepare food with, but it is necessary for cleanliness, and cleanliness is necessary for health. If there is a scarcity of water, or if it requires a great deal of labour to obtain it, (which comes to the same thing as a scarcity,) the uses of water for cleanliness will be wholly or in part neglected. If the neglect becomes a habit, which it is sure to do, disease, and that of the worst sort, cannot be prevented. When men gather together in large bodies, and inhabit towns or cities, a plentiful supply of water is the first thing to which they direct their attention. If towns are built in situations where pure water cannot be readily obtained, the inhabitants, and especially the poorer sort, suffer even more misery than results from the want of bread or clothes. In some cities of Spain, for instance, where the people understand very little about machinery, water, at particular periods of the year, is as dear as wine; and the labouring classes are consequently in a most miserable condition. In London, on the contrary, water is so plentiful, that, as it appears from a return of the various water companies, the daily average of water-supply is sixty-two million gallons, being an average of about two hundred and two gallons to each house and other buildings, which amount to three hundred and ten thousand. This seems an enormous supply; but there are reasons for thinking that the quantity ought to be increased, and the arrangements made so perfect, that there should be a perpetual stream of water through the pipes of each house, like that through the arteries from the heart. The condition upon which the present water companies are allowed to continue their functions is, that they shall, before the expiration of another year, provide a larger and a purer supply. Yet, incomplete as these arrangements are, they are wondrous when compared with the water-supply of other times; and it is satisfactory to know that there are very few of our great towns which are not supplied as well as, and many much better than, London. There are very few large places in Great Britain where, by machinery, water is not only delivered to the kitchens and washhouses on the ground-floors, where it is most wanted, but is sent up to the very tops of the houses, to save even the comparatively little labour of fetching it from the bottom. The cost of this greatly varies in particular localities; and in most places the supply is afforded more cheaply than in the metropolis. There are natural difficulties in London, as in other vast cities, which have been chiefly created through the unexampled increase of the people. The sanitary arrangements of our great towns--the supply of water, the drainage--have followed the growth of the population and not preceded it. As the necessity has arisen for such a ministration to the absolute