the contending
parties, Gustavus used jestingly to call him the peacemaker. He was
frequently heard to say, when at play he was winning from the Landgrave,
"that the money afforded double satisfaction, as it was Imperial coin."
To his affinity with the Elector of Saxony, whom Gustavus had cause to
treat with forbearance, the Landgrave was indebted for the favourable
terms he obtained from the king, who contented himself with the
surrender of his fortress of Russelheim, and his promise of observing a
strict neutrality during the war. The Counts of Westerwald and Wetteran
also visited the King in Frankfort, to offer him their assistance
against the Spaniards, and to conclude an alliance, which was afterwards
of great service to him. The town of Frankfort itself had reason to
rejoice at the presence of this monarch, who took their commerce under
his protection, and by the most effectual measures restored the fairs,
which had been greatly interrupted by the war.

The Swedish army was now reinforced by ten thousand Hessians, which the
Landgrave of Casse commanded. Gustavus Adolphus had already invested
Koenigstein; Kostheim and Floersheim surrendered after a short siege; he
was in command of the Maine; and transports were preparing with all
speed at Hoechst to carry his troops across the Rhine. These
preparations filled the Elector of Mentz, Anselm Casimir, with
consternation; and he no longer doubted but that the storm of war would
next fall upon him. As a partisan of the Emperor, and one of the most
active members of the League, he could expect no better treatment than
his confederates, the Bishops of Wurtzburg and Bamberg, had already
experienced. The situation of his territories upon the Rhine made it
necessary for the enemy to secure them, while the fertility afforded an
irresistible temptation to a necessitous army. Miscalculating his own
strength and that of his adversaries, the Elector flattered himself that
he was able to repel force by force, and weary out the valour of the
Swedes by the strength of his fortresses. He ordered the fortifications
of his capital to be repaired with all diligence, provided it with every
necessary for sustaining a long siege, and received into the town a
garrison of 2,000 Spaniards, under Don Philip de Sylva. To prevent the
approach of the Swedish transports, he endeavoured to close the mouth of
the Maine by driving piles, and sinking large heaps of stones and
vessels. He himself, howev