After much wrangling and dispute, Mr. Mackenzie, to show the sincere desire which the British government entertained of releasing the prisoners on both sides, made a proposal that the exchange should commence by liberating as many French prisoners as could be balanced by British captives in the French prisons; that after this, captives of every nation should be exchanged indifferently on both sides; and whatever number of prisoners might remain on either side, after the general balance had been struck, should also be set at liberty, upon an engagement not to serve till regularly exchanged. To this proposal--a more liberal one could hardly be made--the French only answered by starting new demands, and making new objections. Among these, perhaps, it will scarcely be believed, that Moustier, the French commissioner, had the modesty to propose that Lord Wellington and his army, lying in the lines at Torres Vedras, should be reckoned as French prisoners in the proposed cartel! Mr. Mackenzie answered with becoming spirit, that he would neither be the medium through which his Government should be insulted by such a proposal, nor would he proceed in the negotiation until this impertinence were atoned for. It is needless to proceed farther in the elusory detail of a treaty, which Napoleon had previously determined should be brought to no useful issue. He had calculated which country could best support the absence of their prisoners, or rather to whom their services were of most consequence. He felt that he himself, by the conscription, as well as by the auxiliary troops which he could summon at pleasure from his neighbours or dependents, could always command a sufficiency of men even for his gigantic undertakings; while to Britain, whose soldiers could only be obtained by a high bounty, the deliverance of her prisoners was proportionally more valuable. Whatever was his view in establishing the negotiation, which was probably only to satisfy the French army, by evincing a seeming interest in the unfortunate portion of their brethren in arms who were immured in English prisons, they gave way to the consideration, that while things remained as they were, Britain suffered more in proportion than France. Some proposals for a general peace had been made during the conferences at Morlaix; and the British Government had stated three different principles, any of which they expressed themselves willing to admit as a basis. These were, first, the state of possession before the war; or, secondly, the present state of possession; or, thirdly, a plan of reciprocal compensations. But none of these principles suited the French Government to act upon; so that the treaty for a general peace, and that for restoring, taking into calculation the prisoners on both sides, upwards of a hundred thousand human beings to liberty, their country, and their home, proved both of them altogether nugatory.