From Waghorn Quay it was only a short distance to the Canal, and as they reached its bank a large steamer was just entering on its way to the Mediterranean. Frank observed that she was moving very slowly, and asked the Doctor why she did not put on full steam and go ahead.
"That would be against the rules of the Canal Company," was the reply. "If the steamers should go at full speed they would destroy the Canal in a short time; the 'wash' or wake they would create would break down the banks and bring the sand tumbling into the water. They must not steam above four miles an hour, except in places where the Canal widens into lakes, and even there they cannot go at full speed."
"Then there are lakes in the Canal, are there?" Fred inquired.
"I'll explain that by-and-by," the Doctor responded. "Meantime look across the head of the Gulf and see that spot of green which stands out so distinctly among the sands."
The boys looked in the direction indicated and saw an irregular patch of verdure, on which the white walls of several houses made a sharp contrast to the green of the grass and the palm-trees that waved above them.
[Illustration: "AYOON MOOSA"--THE WELLS OF MOSES.]
"That spot," said the Doctor, "is known as 'Ayoon Moosa,' or 'The Wells of Moses.' It is an oasis, where several wells or springs have existed for thousands of years, and it is supposed that the Israelites halted there and made a camp after their deliverance from Egypt. As the pursuing army of Pharaoh had been destroyed before their eyes, they were out of danger and in no hurry to move on. The place has borne the name of 'The Wells of Moses' from time immemorial; there is a tradition that the largest of them was opened by the divining-rod of the great leader of the Hebrews in their escape from captivity, and is identical with Marah, described in Exodus, xv. 23. The wells are pools of water fed by springs which bubble in their centre; the water in all of them is too brackish to be agreeable to the taste, but the camels drink it readily, and the spot is an important halting place for caravans going to or from the desert."
The Doctor farther explained that Suez was formerly supplied with water from these wells, which was brought in goat-skins and casks on the backs of camels. The springs are seven or eight miles from Suez in a direct line, and the easiest way of reaching them is by a sail or row boat to the landing place, about two miles from the oasis. Since the opening of the fresh-water canal in 1863 this business of supplying the city has ceased, and the water is principally used for irrigating the gardens in the oasis. Most of the fresh vegetables eaten in Suez are grown around the springs, and there is a hotel there, with a fairly good restaurant attached to it. The residents of Suez make frequent excursions to the Wells of Moses, and almost any day a group of camels may be seen kneeling around the principal springs.