and found that, the operator of a contract carriage, who intended to reduce the seating capacity in a vehicle covered by contract carriage permit, did not have to seek any permission for the same under Section 52 of the Act, since the liability to tax was on the seating capacity as specified by the manufacturer of the vehicle, and in terms of the permit that was granted to the operator in question. The Full Bench, which considered the matter, had left open the issue as to whether the possible loss of revenue could be treated as a ground in cases were a permission was required for the purposes of an alteration under Section 52 of the Act. As already noticed, in the instant case, since the alteration sought for is not a reduction in the seating capacity but only in the type of seats that are fitted in the vehicle, I am of the view that, the issue of any loss of revenue, in the sense understood by the Division Bench in the cases aforementioned, does not arise for consideration. Further, inasmuch as it is not in dispute that the seating capacity of the vehicle has not been altered and the alterations made are only in respect of the kind of seats, namely,