"One modern writer on this subject says he has known a strong north-east wind to lay the ford dry, and be followed by a south-west wind that rendered the passage impossible even for camels. M. De Lesseps, the projector of the Suez Canal, says he has seen the northern end of the sea blown almost dry, while the next day the waters were driven far up on the land. In 1799 Napoleon Bonaparte and his staff came near being drowned here in a sudden change of wind, and fatal accidents occur once in a while from the same cause. On the map prepared by the officers of the maritime canal to show the difference between high and low water, you will see that the conditions are just as I have stated them. "Some writers believe," the Doctor continued, "that the sea was farther inland three thousand years ago, and that the crossing was made about ten miles farther north than where we now stand. There is some difficulty in locating all the places named in the biblical story of the exodus, and it would be too much to expect all the critics to agree on the subject. The weight of opinion is in favor of Suez as the crossing-place of the Israelites, and so we will believe we are at the scene of the deliverance of the captives and the destruction of the hosts of Pharaoh. It is a mistake to suppose that Pharaoh was himself drowned in the Red Sea; it was only his army that suffered destruction." From the point where this conversation took place they went to the Waghorn Quay, just beyond. It was named in honor of Lieutenant Waghorn, who devoted several years to the establishment of the so-called "overland route" between England and India. Through his exertions the line of the Peninsular and Oriental steamers was established, and the mails between England and India were regularly carried through Egypt, instead of taking the tedious voyage around the Cape of Good Hope. He died in London in poverty in 1850; since his death the importance of his services has been recognized, and a statue to his memory stands on the quay which bears his name. At his suggestion the name of "overland route" was given to this line of travel between England and India, though the land journey is only two hundred and fifty miles, to distinguish it from the "sea route" around the Cape of Good Hope. 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."