We need not dwell on other evident objections which may be raised to the continuance of the Income-Tax. These suggest themselves to the minds of every one, and have been often pointed out and dwelt on by public writers. The danger of maintaining a war tax in time of peace--the eminently inquisitorial nature of the impost--and the injustice of assessing professional men, authors, artists, &c., whose incomes depend solely on their health, at the same rate as the possessors of accumulated property, are reasons sufficient to condemn it. But the most monstrous injustice, to the already severely burdened people of Great Britain, is the exemption of Ireland from its operation. It is impossible to assign any valid reason for the policy which dictated this odious partiality. Sir Robert Peel in 1842 could not find any better excuse than the following: "When I am proposing a tax, limited in duration, in the first instance, to a period of three years, and when the amount of that tax does not exceed three per cent, I must of course consider, with reference to public interests, whether it be desirable to apply that tax to Ireland. I must bear in mind, that it is a tax to which Ireland was not subject during the period of the war; that it is a tax for the levy of which no machinery exists in Ireland--_Ireland has no assessed taxes_--the machinery there is wanting, and I should have to devise new machinery for a country to which the tax has never been applied." Most rare and convincing logic! Because Ireland on a former occasion was not taxed, she is not to be taxed now; because she pays no assessed taxes, her income also is to be exempted from contribution! Why, these were, of all others the very strongest arguments for laying it on; and most contemptible indeed was the pusillanimity of the representatives of English and Scottish constituencies, who did not on that occasion peremptorily demand the enforcement of equal burdens. What a premium to agitation is here held out! The Irishman with a yearly revenue of £150 a-year, pays no assessed taxes--is cleared from some excise duties--and enjoys an immunity from Income-Tax. The people of England and Scotland are kind enough to save him all these charges, in grateful recognition, doubtless, of his exceeding docility, and proverbial attachment to the Constitution. As to the allegation of want of ready-made machinery, the answer was plain--Make it. Nine years have gone by, and yet it is not made, and there is no proposal for making it; and it remains to be seen whether the fourth attempt at imposition will be as grossly partial is the others. If this tax is again renewed, there can be henceforth no escape from it. It matters not whether the term of the new lease be seven, or five, or three years--the tax itself will be immortal, and surely we shall not be insulted this time with a plea of deficient machinery.