The mode of laying out their gardens was as varied as that of the houses; but in all cases they appear to have taken particular care to command a plentiful supply of water, by means of reservoirs and canals. Indeed, in no country is artificial irrigation more required than in the valley of the Nile; and, from the circumstance of the water of the inundation not being admitted into the gardens, they depend throughout the year on the supply obtained from wells and tanks, or a neighboring canal. The mode of irrigation adopted by the ancient Egyptians was exceedingly simple, being merely the _shadoof_, or pole and bucket of the present day; and, in many instances, men were employed to carry the water in pails, suspended by a wooden yoke they bore upon their shoulders. The same yoke was employed for carrying other things, as boxes, baskets containing game and poultry, or whatever was taken to market; and every trade seems to have used it for this purpose, from the potter and the brick-maker, to the carpenter and the shipwright. Part of the garden was laid out in walks shaded with trees, usually planted in rows, and surrounded, at the base of the stem, with a circular ridge of earth, which, being lower at the centre than at the circumference, retained the water, and directed it more immediately towards the roots. It is difficult to say if trees were trimmed into any particular shape, or if their formal appearance in the sculpture is merely owing to a conventional mode of representing them; but, since the pomegranate, and some other fruit trees, are drawn with spreading and irregular branches, it is possible that sycamores, and others, which presented large masses of foliage, were really trained in that formal manner, though, from the hieroglyphic signifying "_tree_" having the same shape, we may conclude it was only a general character for all trees. Some, as the pomegranates, date-trees, and _dom_-palms, are easily recognized in the sculptures, but the rest are doubtful, as are the flowering plants, with the exception of the lotus and a few others.