Under the organization of the Engineer Department, as adopted previous to my acceptance of the office you have conferred upon me, the Road was to be divided into three divisions, Eastern, Western and Middle: Edward Miller, Esq., as associate engineer, was assigned to the Western, and W. B. Foster, Jr., to the Eastern division. These gentlemen had entered upon the survey of their respective lines, previous to my arrival, under instructions from the president, each with two full corps of assistants. The middle, or mountain division, not having been provided for, I concluded after a full consideration of the subject that the interest of the Company would be best promoted by so altering the organization as to abolish it altogether, and extend the eastern and western divisions to the summit of the Allegheny mountains, the natural boundary between them. Under this arrangement, the surveys have since been prosecuted. The Board having directed me to cause a location of the whole line, from Harrisburg to Pittsburg, to be made at the earliest practicable period, I at once commenced a reconnoissance of that portion of the intervening country, over which it seemed--from an inspection of a map of the State--that the Road would probably pass, for the purpose of determining the best plan of operations to carry out their views. The Legislature, in their grant to the Company, wisely left the choice of a route for the Road, between its termini, entirely free, throwing upon the Board the responsibility of selecting, upon the wide field that was opened to them, a line for their great work, which would offer the cheapest railroad conveyance for the transportation of freight and the most expeditious for travel that could be selected between the west and the northern Atlantic cities. Such a route, it was believed from previous surveys, lay within the borders of Pennsylvania, an expectation which has been fully justified by the results obtained from our examinations. Of the several routes proposed, I found no difficulty--after a careful inspection of the plans of the various surveys, made under the authority of the Commonwealth, and my reconnoissance of the country--in coming to the conclusion that the valley of the Juniata offered advantages for a line which, whether we consider the low gradients that may be obtained along it or its general directness, the desiderata required, is without a rival.