Among the results of this rush through Nicaragua was the expedition of William Walker, the great filibuster of this century. With fifty-five men he went forth from California to conquer Central America, and in the end nearly succeeded. He got himself elected President of Nicaragua, but ultimately raised such a storm that he was brought to bay by some forces from Honduras and Costa Rica, and had to surrender to the captain of a British man-of-war, by whom he was handed over to his enemies to be shot. With this wonderful traffic across the isthmus arose the old canal schemes, as well as a new one for a railway. Easy and rapid transit must be obtained in some way or other, and this time being in the age of steam, it naturally followed that the project for a railway gained immediate support. It was commenced in 1850, at which time the terminus on the Gulf side was settled, and the foundations of the new town of Aspinwall or Colon laid a few miles east of Chagres. The difficulties were enormous, on account of the marshy ground and the number of rivers to be crossed. The wooden bridges were almost immediately attacked by wood ants, floods carried away the timbers, but more distressing than all was the loss of life through sickness. Chinese labourers were imported in great numbers, only to fall victims to the same deadly climate which had given Porto Bello and the isthmus generally their evil reputation. However, the railway was completed in 1864, at the enormous cost of $7,500,000, although its length is only 47-1/2 miles. Thus one part of the great project was carried out, and a good road provided for passengers and light goods, the annual value of which latter is now about £15,000,000. But those in favour of a canal were not sleeping all this time. The old routes were again mooted, that through Lake Nicaragua being put down at 194 miles in length, while the other, since known as the Panama, was only 51. Dr. Edward Cullen, however, in 1850 went out and made some surveys, with the result that he advocated the old Darien line as the shortest and most practicable. He would start from the same Port de Escoces that witnessed the downfall of William Paterson's scheme, and which he said was a most commodious harbour for the terminus of a canal. The isthmus was here only 39 miles across, and free from many of the difficulties which beset the other routes.