The result of the operations of the allied forces upon and within the frontier of France, is well known. After some success, the sole consequence of which was to increase the jealousy which already subsisted between the Austrian and the Prussian, the Republican army succeeded in driving back the enemy, and establishing themselves upon the Rhine. It was at this moment, when the danger was at its height, and all Germany, besides Holland and the Netherlands, was exposed to the terrors of invasion, that Frederick William of Prussia, actuated by a policy at once base and suicidal, announced his intention of withdrawing his troops from the ranks of the confederacy, in total violation of the defensive treaty of 1787. It is somewhat difficult now, notwithstanding all that has been written on the subject, to get at the real grounds of this disgraceful proceeding. The principal alleged cause was the exhausted state of the Prussian treasury, which, it was said, rendered it absolutely impracticable for the king to maintain in the field, _without subsidy_, the contingent of troops which he had solemnly bound himself to furnish for the general defence of the Continent. It nowhere appears that any exertion was made to recruit the Prussian finances. By the partition of Poland, that State had acquired the accession of a large and most valuable territory, worth something surely by way of mortgage, or if not, at least a ready magazine of supplies. But all this availed nothing. Prussia professed herself ready to take whatever subsidy England, or any other power, might furnish towards the maintenance of her troops--otherwise they were not to reckon longer upon her co-operation and support. This proposition was made broadly, shamelessly, and without any diplomatic circumlocution. "Jacobi, Prussian minister, (at London,) gave in a kind of memorial, expressive of his Prussian Majesty's intention not to grant the succours we had asked for, and declining all general interference in the war, _without being largely paid_." So much for defensive treaties!