FORE:Frederick had been three days and nights at work upon his fortress before the allies ventured forward to look into it. It was then a Gibraltar. Still for eight days more the spade was not intermitted. Cogniazo, an Austrian, writes: It is a masterpiece of art, in which the principles of tactics are combined with those of field fortifications as never before. The Retreat ordered.Awful Suffering.Narrow Escape of the King.The Flight from Prague.Military Mistakes of the King.Frederick returns to Berlin.His wonderful administrative Ability.Poland joins Austria.The Austrians enter Silesia.Unreasonable Demands of Frederick.Humiliation of the King.Prince Charles and his Bride.Character of Leopold.Death of the Emperor.Bavaria turns against Frederick.Anecdotes of Prince Leopold.Peril of Frederick.Battle of Hohenfriedberg.Signal Victory of Frederick.