THREE:Secret negotiations were immediately opened at Breslau, in Silesia, between England, Austria, and Prussia. Maria Theresa, harassed by the entreaties of her cabinet and by the importunities of the British court, consented to all that Frederick demanded.On the 3d of July Frederick issued his declaration of war. On that very day his solid battalions, one hundred thousand556 strong, with menacing banners and defiant bugle-notes, crossed the border, and encamped on Bohemian ground. At the same moment, the kings brother, Prince Henry, with another army of one hundred thousand men, commenced a march from the west to co-operate in an impetuous rush upon Vienna. These tidings caused the utmost consternation in the Austrian capital. An eye-witness writes: