...nd Baltimore. Leaving Salem on June 24, Early marched rapidly to the Potomac, a distance of 212 miles, by July 4th, driving Sigel's forces from Martinsburg and other points, to take refuge on the Maryland Heights. Mr. Pond praises Sigel for remaining there with 6,000 or 8,000 men when he should have joined Wallace's troops advancing from Baltimore. Early finding he could not get at Siegel, marched r...