It was quite proper to ask whether the impracticability of bringing wagon trains over the mountains was as complete as we reported, and Grant's horseback journey back into Kentucky when the thermometer was at zero is sufficient proof that he found it imperatively necessary to settle that question also with his own eyes and without delay. We shall see presently what he reported. He knew before he left Chattanooga that the railroad from Nashville was hardly supplying Thomas's army. To Foster's appeals for at least some clothing and shoes by that route, General Meigs, who was there, replied that it could only be done "at the cost of starvation to our animals or short rations to our men" in the Army of the Cumberland. [Footnote: _Id_., vol. xxxi. pt. iii. p. 476.] He said that the railroad must be "not only repaired, but rebuilt," before it could do more than supply the troops already dependent on it. General McCallum, the superintendent of military railroads, had gone west, and was inspecting the Nashville and Chattanooga Road, and carefully studying the problem of its possible capacity. [Footnote: _Id_., pp. 422, 444.] In consequence of this a change was made in the local superintendence, and Mr. Adna Anderson was put in charge of operating the line, while Mr. W. W. Wright was made constructing engineer. [Footnote: _Id_., vol. xxxii. pt. ii. pp. 371, 372.] Under their energy and ability it was repaired and operated so that East Tennessee as well as Sherman's army in Georgia were abundantly supplied during the Atlanta campaign; but this is part of the history of the next spring and summer. To reduce the number of mouths to feed at Chattanooga, Grant sent portions of the Army of the Tennessee into northern Alabama, where they could be supplied by boats coming up the Tennessee River. [Footnote: Official Records, vol. xxxi. pt. iii. pp. 429, 496, 502.] The same considerations influenced him in assenting to Sherman's plan of the Meridian Expedition, where the troops engaged in it could live partly at least on a country not yet ravaged by armies, whilst they would make a diversion in favor of the weakened army left with Thomas. It is safe to say that no such division of efforts would have occurred if the railroad had been ready to supply the concentrated army on an advance into Georgia. Sherman understood it to be an interlude, and expected to be back and join the main army by the time the railroad should be repaired and supplies accumulated. [Footnote: _Id_., p. 498.] As auxiliary to the line of supplies, the railroad from Bridgeport to Decatur was also to be repaired, so as to connect with steamboats at the latter place.