As long ago as 1856 the Court of Exchequer, speaking of an Act which enabled a railway company to charge a special rate for the carriage of "manufactured goods", said that this term "must be understood in a popular sense and must mean not merely goods produced from the raw state by manual skill and labour but such as are ordinarily produced in manufactories It should be observed, however, that, having given what we conceive to be the meaning of the term, the application of that meaning to particular articles is a question of fact, not of law": Parker v. Great Western Railway Co. [1] . Whether or not a particular article answers the description "manufactured goods" must depend upon the context of language and subject matter in which the phrase is used. Not much more can be said. Attempts to answer the question in the present case by the application of abstract considerations, said to be universally decisive criteria, produced only logical fallacies and ambiguities. It is no doubt true that all manufacturing involves the making of a new thing. But it is not true that every making of a new thing is, in the relevant sense, manufacturing. And what is meant by a new thing? In Federal Commissioner of Taxation v. Jack Zinader Pty. Ltd. [2] (a case under the Sales Tax Acts), Dixon J. quoted a statement by Darling J. in McNicol v. Pinch [3] that "the essence of making or of manufacturing is that what is made shall be a different thing from that out of which it is made". That is indisputable. But what is a different thing? Various paraphrases were offered to me, such as a "substantially different thing", not merely an "altered thing"; "a new entity"; "a distinct commodity". But these are all pregnant with ambiguity. Identity and difference, as concepts, must always be related to some quality of the thing or things in respect of which identity or difference is to be determined. It may be colour, shape, chemical composition or any other quality. To speak of "substantial differences", as distinct from small differences, means little or nothing, unless some quality of the thing is postulated as its essential. And whether a thing is so different a thing from the thing or things out of which it was made as to be properly described as a new commodity may depend not only upon physical characteristics but also on differences in its utility for some purpose. This was emphasized in the argument for the taxpayer. Scrap before it was treated by shearing or baling was, it was said, not "usable"; by such treatment it was made usable. But I do not think the inquiry is advanced by this or by speaking of a "new entity". If a piece of metal be cut into two, then clearly two new entities are created, neither of which is in size the same as the piece which as an entity has been destroyed. To take an illustration suggested by remarks of Scrutton L.J. in Bailey, R. O. v. Potteries Electric Traction Co. Ltd. [1] : a shopkeeper who slices rashers from a side of bacon with a mechanical cutter. He is creating new things. They are things which have a name of their own, rashers, and are usable in a way that the piece from which they were cut was not. It may be that only by thus creating them could he find buyers for his bacon. Still he would not ordinarily be called a manufacturer, and his goods would not be called manufactured goods. That, it may be said, is because the bacon itself was not manufactured, that the butcher who kills a pig does not manufacture pork, and the bacon curer does not manufacture bacon. But if that were the only answer, one could turn to Lord Justice Scrutton's other shopkeeper, the man who cuts off pieces from a roll of calico. I mention these things not because I think analogies, whether false or true, are of any help in this case, but rather to shew that they are not.