The appointment of principal engineer of the railway was taken into consideration at the first meeting of the directors held at Liverpool subsequent to the passing of the act of incorporation. The magnitude of the proposed works, and the vast consequences involved in the experiment, were deeply impressed on their minds, and they resolved to secure the services of a resident engineer of proved experience and ability. Their attention was naturally directed to George Stephenson; at the same time, they desired to have the benefit of the Messrs. Rennie's professional assistance in superintending the works. Mr. George Rennie had an interview with the board on the subject, at which he proposed to undertake the chief superintendence, making six visits in each year, and stipulating that he should have the appointment of the resident engineer. But the responsibility attaching to the direction in the matter of the efficient carrying on of the works would not admit of their being influenced by ordinary punctilios on the occasion, and they accordingly declined Mr. Rennie's proposal, and proceeded to appoint George Stephenson principal engineer at a salary of £1000 per annum. He at once removed his residence to Liverpool, and made arrangements to commence the works. He began with the "impossible thing"--to do that which some of the principal engineers of the day had declared that "no man in his senses would undertake to do"--namely, to make the road over Chat Moss! It was, indeed, a most formidable undertaking, and the project of carrying a railway along, under, or over such a material as that of which it consisted would certainly never have occurred to an ordinary mind. Michael Drayton supposed the Moss to have had its origin at the Deluge. Nothing more impassable could have been imagined than that dreary waste; and Mr. Giles only spoke the popular feeling of the day when he declared that no carriage could stand on it "short of the bottom." In this bog, singular to say, Mr. Roscoe, the accomplished historian of the Medicis, buried his fortune in the hopeless attempt to cultivate a portion of it which he had bought.