Water began to flow from the Mediterranean into the canal in February, 1869, and from the Red Sea in July of the same year; and by October, the lakes, and the canal in its whole length, were filled with water navigable by vessels of the highest class. The water-way thus obtained has a width at the surface varying from 197 feet at deep cuttings, to 225 feet at lower ground. The sides slope to a width at the bottom of 72 feet, and an average depth of 26 feet is secured along the whole course. As the water is at one level from sea to sea, the canal is without obstruction of any kind. No locks, dams, or water-gates are required, and vessels enter the canal from either end and pursue their journey without interruption or detention. So great, however, was the eagerness of trade to take advantage of the new route, that the volume of traffic increased within a very short time after the opening of the canal to such an extent as to cause serious delays in the transit, and a number of schemes were brought forward for building other canals by which the two seas might be united. In the end, all these plans were abandoned, and it was decided to widen the canal sufficiently to enable it to meet the increased demand upon its carrying capacity. It may not be without interest to note the growth of traffic in the canal by a few figures. From 486 ships which passed through in 1870, the number rose to 3,100 in 1886; while the receipts increased from $1,031,875 in 1870, to $11,541,090 in 1886. The canal, when completed, was found to have cost twenty million pounds sterling, a sum far in advance of the original estimate, but made necessary by the addition of several important items of expenditure that were not foreseen. One of these was the substitution of paid labor for the forced labor promised by the Pasha, but which was made impossible by public clamor. The Egyptian ruler discovered that he was not living in the times of the pyramid-building Pharaohs, when men were made beasts-of-burden. Another item not provided for was the necessity of supplying the 30,000 workmen employed on the canal with fresh water. For this purpose, a branch canal had to be dug, by which water could be brought from the Nile. [Illustration: Cutting the Canal at Panama.]