I should like to ask the right hon. Gentleman, as we have not discussed this question in our previous Debates, what is the basis of the rating of commercial salmon fishings. There are, as I understand, salmon fishings which are let by competition; that is to say, the highest bidder gets the salmon fishing. Upon what basis will the rating be fixed? I hold the opinion that this question is more serious than the right hon. Gentleman has indicated to the House, and I think we are entitled to a great deal more information upon it. There are many difficulties in connection with the question of the de-rating of salmon fishings, and I should be glad to hear if the right hon. Gentleman can give any explanation as to how the rating of these salmon fishings which are let to the highest bidder is taken into consideration.