After the midday heat was passed we mounted again, and rode up the clear, slow rivulet till it was hidden within the palm-gardens, behind their low boundary walls of sun-dried clay. In and out between the tree roots were dug little canals a foot or two deep, so contrived that the stream might be let into them from the stone channel and each tree watered in its turn. The head of water was owned by the community, and shared out among the landowners for so many minutes or hours daily or weekly according to the traditional use. The water was a little brackish, as was needful for the best palms; but it was sweet enough in the wells of private water in the groves. These wells were very frequent, and found water three or four feet below the surface.