At Jaja there are scattered doums and a number of acacias, as well as a small dense grove of date-palms, altogether a goodly number of trees. The well is a broad and deep pool surrounded by vertical walls of brown clay, representing the material from time to time thrown out during the process of cleaning. Large bubbles of gas are generally to be seen rising intermittently to the surface, while at times the pool becomes perfectly still, except for the occasional small bubbles which continue to rise at different points. Then follows a strong flow from the actual bore (situated near the south side of the pool), the water boiling up and breaking the surface with considerable force and noise, which may continue for several minutes before everything becomes quiet again. In all probability the markedly intermittent flow is due to the temporary blocking of the bore-hole by the sediment forming the bottom of the pool, the mud being from time to time forced back by the accumulating pressure of the water and gas below. The temperature of the water was found to be 86° F., and the yield was stated to amount to 1½ qirats, or about 35 to 40 gallons a minute. Dakhakhin is charmingly situated on the southern slope of an eminence, alongside a dingle, prettily wooded with tamarisk and doum-palms. The well is on the north side, and higher up than the village. One of the irrigating channels, cut out near the bottom of the western slope, follows the winding of the dingle to a thick clump of date-palms near the mouth. Higher up, alongside the village, the water in another channel races down the hill in a series of little runs and falls, the stream threading its way through fruit-gardens containing date-palms and vines, fig, mulberry, and apricot trees, as well as pomegranates and bananas. Ain Dakhakhin is a huge pool when full, though at times, when the retaining bank on the south side is cut, a large part of its sandy bed is exposed. The flow, taxed, I believe, as 3½ qirats (110 to 120 gallons per minute), varies at different times of the year, and depends to a considerable extent on the amount of sediment in the pool. Cleaning is periodically undertaken, in order to remove the sand which drifts in from the north side in large quantities.