"The face of the country within the limits prescribed is generally very uneven, and in many places broken by a succession of high mountains and deep hollows, too formidable to be reduced within five degrees of the horizon, but by crossing them obliquely, a mode which, although it imposes a heavy task of hill-side digging, obviates generally the necessity of reducing hills and filling hollows, which, on these grounds, would be an attempt truly quixotic. This inequality of the surface is not confined to the Alleghany mountain; the country between the Monongahela and Ohio rivers, although less elevated, is not better adapted for the bed of a road, being filled with impediments of hills and hollows, which present considerable difficulties, and wants that super-abundance and convenience of stone found in the mountain. "The indirect course of the road now traveled, and the frequent elevations and depressions which occur, that exceed the limits of the law, preclude the possibility of occupying it in any extent without great sacrifice of distance, and forbid the use of it, in any one part for more than half a mile, or more than two or three miles in the whole. "The expense of rendering the road now in contemplation passable, may, therefore, amount to a larger sum than may have been supposed necessary, under an idea of embracing in it a considerable part of the old road; but it is believed that the contrary will be found most correct, and that a sum sufficient to open the new could not be expended on the same distance of the old road with equal benefit. "The sum required for the road in contemplation will depend on the style and manner of making it; as a common road cannot remove the difficulties which always exist on deep grounds, and particularly in wet seasons, and as nothing short of a firm, substantial, well-formed, stone-capped road can remove the causes which led to the measure of improvement, or render the institution as commodious as a great and growing intercourse appears to require, the expense of such a road next becomes the subject of inquiry. "In this inquiry the commissioners can only form an estimate by recurring to the experience of Pennsylvania and Maryland in the business of artificial roads. Upon this data, and a comparison of the grounds and proximity of the materials for covering, there are reasons for belief that, on the route reported, a complete road may be made at an expense not exceeding six thousand dollars per mile, exclusive of bridges over the principal streams on the way. The average expense of the Lancaster, as well as Baltimore and Frederick turnpike, is considerably higher; but it is believed that the convenient supply of stone which the mountain affords will, on those grounds, reduce the expense to the rate here stated.