In Westminster Corporation v. London and North Western Railway Co. [2] , Lord Macnaghten said: "It is well settled that a public body invested with statutory powers such as those conferred upon the corporation must take care not to exceed or abuse its powers. It must keep within the limits of the authority committed to it. It must act in good faith. And it must act reasonably. The last proposition is involved in the second, if not in the first." In our opinion, for the reasons already stated, the Local Government Act does not authorize the defendant Council to implement the scheme approved of at the meeting of 20th January 1948. If it does, we are of opinion that the Council, in attempting to resume more land than is required to construct the road, is not acting in good faith. By that we do not mean that the Council is acting dishonestly. All that we mean is that the Council is not exercising its powers for the purposes for which they were granted but for what is in law an ulterior purpose. It is not necessary that this ulterior purpose should be the sole purpose. The Council, no doubt, believes that the new road will have advantages over Bloomfield Street and Wisdom Street from the point of view of access and upkeep. But the evidence establishes that one purpose at least of the Council in attempting to acquire the land not required to construct the new road is to appropriate the betterments arising from its construction. In Municipal Council of Sydney v. Campbell [1] , this was the sole purpose. But in our opinion it is still an abuse of the Council's powers if such a purpose is a substantial purpose in the sense that no attempt would have been made to resume this land if it had not been desired to reduce the cost of the new road by the profit arising from its re-sale. The most conclusive evidence of this purpose appears to be an attempt to resume the strip of land at the southern frontages of lots 23, 24 and 25 of s. 5. There is, as far as we can see, no other explanation of this part of the scheme than that the Council wishes to make as big a profit as possible out of the closing of Bloomfield Street and the purchase and re-sale of portion of the land comprised therein, however ruinous the result may be to the owners of these lots, and particularly to the plaintiff Tunnie, who has built on his lot. There is no doubt that the scheme will depreciate the value of these lots and that there would be no profit but only a loss on their re-sale and so they are not included in the resumptions. Then lots 19 and 20 belonging to Dr. Thompson are amongst the lands finally excluded from the scheme although they are to lose their frontages to Bloomfield Street. The town clerk reported that this would help to lessen the expense of the scheme and these lots must only have been excluded because it was considered that without these frontages the lots would not be likely to show a profit on a re-sale. Further, assuming that it is within the power conferred on the Council by s. 321 (d) to resume the residues of the lots through which the new road will pass so as to amalgamate them into new lots with frontages conforming to the new road, in determining whether the power was really exercised for this purpose or for the collateral purpose of making a profit, it is highly significant that the owners of these residues were not given an opportunity of agreeing to reform these lots so as to comply with the scheme before an attempt was made to expropriate them (J. L. Denman & Co. Ltd. v. Westminster Corporation [1] ). Equally significant is the inclusion of Blair's land in the scheme. It would seem that the only purpose in resuming this land is to make a profit out of its re-sale unless the purpose is to acquire the rights under the Public Roads Act of an adjoining owner, in relation to Wisdom Street, which is an equally unauthorized purpose.