The question then arose whether, in the face of this tremendous difficulty, the execution of the Kilsby Tunnel should be continued or abandoned. The general opinion of the several eminent engineers who were consulted was against proceeding, and certainly the amount of the difficulties which were subsequently incurred, justified the verdict. But in science, as well as in war, the word “IM_possible_” can occasionally, by cool and extraordinary exertions, be divested of its first syllable; and accordingly, Mr. Robert Stephenson offering, after mature reflection, to undertake the responsibility of proceeding, he was duly authorised to do so. His first operation was of course to endeavour by the power of steam-engines--the comrades of his life--to lower the water with which he had to contend; and although, to a certain degree, this attempt succeeded, yet by the draining of remote springs, and by the sinking of the water in wells at considerable distances, it was soon ascertained that the quicksand in question covered several square miles. The tunnel, 30 feet high by 30 feet broad, arched at the top as well as the bottom, was formed of bricks laid in cement, and the bricklayers were progressing in “lengths” averaging 12 feet, when those who were nearest the quicksand, on driving into the roof, were suddenly almost overwhelmed by a deluge of water which burst in upon them. As it was evident that no time was to be lost, a gang of workmen, protected by the extreme power of the engines, were with their materials placed on a raft; and while, with the utmost celerity, they were completing the walls of that short length, the water, in spite of every effort to keep it down, rose with such rapidity, that at the conclusion of the work the men were so near being jammed against the roof, that the assistant-engineer, Mr. Charles Lean, in charge of the party, jumped overboard, and then, swimming with a rope in his mouth, he towed the raft to the foot of the nearest working shaft, through which he and his men were safely lifted up into daylight, or, as it is termed by miners, “_to grass_.” The water now rose in the shaft, and as it is called “drowned out” the works. For a considerable time all the pumping apparatus appeared to be insufficient. Indeed the effort threatened to be so hopeless that the Directors of the Company almost determined to abandon it, but the engineer-in-chief, relying on the power of his engines, prayed for one fortnight more; before that period expired Science triumphed over her subterranean foe, and--thanks to the inventors of the steam-engine--the water gradually lowered. By the main strength of 1250 men, 200 horses, and 13 steam-engines, not only was the work gradually completed, but during night and day, for eight months, the astonishing and almost incredible quantity of 1800 gallons per _minute_ from the quicksand alone was raised by Mr. Robert Stephenson and conducted away!!