CAMP LYONS.

On one occasion word was received from General McClellan that the enemy had crossed the Potomac in large force, and were advancing upon the city. General Smith immediately ordered out his command, posting the Thirty-third behind a stone wall, where they remained until the returning cavalry scouts reported the alarm to be false. During the latter part of the month one Company crossed the Long Bridge, on a reconnoissance, with a section of artillery and fifty cavalry, and proceeding on the Falls Church road, thence to Lewinsville, drove the rebel cavalry pickets to their camp at Vienna, arrested a prominent secessionist, and returned by way of Langley, reaching camp at sunset.

General McClellan, accompanied by President Lincoln, Secretaries Seward, Chase and Cameron, reviewed the Brigade on the 29th of August.

The following changes took place while here: Henry N. Alexander appointed Quarter-Master, vice H. S. Suydam, resigned.

Sylvanus Mulford, promoted to full Surgeon, vice T. R. Spencer, promoted to Brigade Surgeon.

Patrick Ryan, 2nd Lieutenant of Company K, resigned, succeeded by Edward Cary, who was immediately detailed to General Smith’s staff.

Peter Weissgreber, Co. G, died in camp.