The debates on the definitive treaty of Amiens took place on May 13 and 14, 1802, and though vigorously sustained, were to some extent a repetition of those on the preliminaries of peace. The opposition to it was headed by Grenville in the lords and in the commons by Windham, who compared it unfavourably with the preliminaries; and the stipulations with respect to Malta were justly criticised as one of its weakest points. Strange to say, Pitt took no effective part in the discussion, which ended in overwhelming majorities for the government. As in the previous session, domestic affairs, except in their bearing on foreign policy, received comparatively little attention from parliament. The income tax was repealed, almost in silence, as the first fruits of peace, and Addington, as chancellor of the exchequer, delivered an emphatic eulogy on the sinking fund by means of which he calculated that in forty-five years the national debt, then amounting to £500,000,000, might be entirely paid off. The house of commons showed no want of economical zeal in scrutinising the claims of the king on the civil list, and those of the Prince of Wales on the revenues of the duchy of Cornwall. Nor did it neglect such abuses as the non-residence of the parochial clergy, and the cruel practice of bull-baiting, though it rejected a bill for the suppression of this practice, after a characteristic apology for it from Windham, in which he dwelt upon its superiority to horse-racing. In this session, too, a grant of £10,000 was voted to Jenner for his recent invention of vaccination. In supporting it, Wilberforce stated that the victims of small-pox, in London alone, numbered 4,000 annually.