CHAPTER XXX.

FOURTH CAMPAIGN OF THE SEVEN YEARS’ WAR.

Desperate Exertions of Frederick.--Aid from England.--Limited Resources.--Opening of the Campaign.--Disgraceful Conduct of Voltaire.--Letter to Voltaire.--An Act of Desperation.--Letter to Count Finckenstein.--Frankfort taken by the Prussians.--Terrible Battle of Kunersdorf.--Anguish of Frederick.--The Disastrous Retreat.--Melancholy Dispatch.--Contemplating Suicide.--Collecting the Wrecks of the Army.--Consternation in Berlin.--Letters to D’Argens.--Wonderful Strategical Skill.--Literary Efforts of the King 475