This element, so essential both for the house and garden, is not likely to be lost sight of; because, from the earliest times, it has been an understood requisite both for a dwelling and a garden. Hence, as cities and towns formerly were placed by a river, or on some inlet of the sea, so detached dwellings were placed by brooks or springs. With the present improved means of procuring water by boring, or collecting it on the surface and preserving it in tanks, few difficulties respecting the procuring of water can occur. It must, however, be taken into consideration, that where there is a garden, much more water is required than where there is only a house.