A declaration of His Electoral Highness the Duke of Brandenburgh, concerning the present war with France: directing his subjects and vassals, and all other his dependants, how they are to demean themselves in their trading, negotiation, and all incident occasions during the present war. As also a letter sent from the Imperial Diet at Ratisbon to the thirteen cantons in Switzerland, March 7, 1689. Exhorting them to adhere to His Imperial Majesty, and the princes of the empire, in the present war against France.