TWO: Adieu! my adorable sister. I am so tired I can not stir, having left on Tuesday night, or rather Wednesday morning, at three oclock, from a ball at Monbijou, and arrived here this Friday morning at four. I recommend myself to your gracious remembrance, and am, for my own part, till death, dearest sister, yourGeneral Neipperg had now left Neisse; but he kept himself so surrounded by clouds of skirmishers as to render his march entirely invisible. Frederick, anxious to unite with him his troops under the Prince of Holstein Beck, advanced toward Grottkau to meet that division, which had been ordered to join him. The prince had been stationed at Frankenstein, with a force of about eight thousand, horse and foot; but the Austrian scouts so occupied all the roads that the king had not been able to obtain any tidings from him whatever.