I think that Massey actually said 250,000 cubic feet, when someone asked him the stupid question as to what size of unlimited fire volume the greatest fire brigade in the whole of....London could control. It was probably a bit like saying that the answer to the perplexities of the universe is 42. (God, I can feel a post from Benzo coming on.) He was probably busy at the time, pondering on what to buy Mrs Shaw for Christmas and hoped that the silly sod asking the question would go away if he gave an answer. Since he died in 1908, we cant really ask him now. (Perhaps Kurnal did discuss this with him at some time though when he was alive and could tell us what Massey really thought.) As Brian said, Local acts have a slef live and need constantly re-enacted. They certianly go back further than the current versions.