"There would be persuasive force in that argument, and I would feel very well disposed to accept it, had I not found in the very wording of section 4(3) of the Act the provision that, wherever the Court of Criminal Appeal does find itself of the opinion that a sentence passed has been too severe, it 'shall ... 'quash' that sentence and 'pass such other sentence ... as 'they' (the court) 'think ought to have been passed in substitution therefor.' When one finds those words in the section and considers the context in which they are used, and the subject matter to which those words must be applied, one is inevitably driven to the conclusion that the word 'quash' is not there used in the sense in which the Shorter Oxford English Dictionary tells me that it often is used, namely, 'to annul,' 'make null or void,' but is used in the less drastic meaning that the former sentence is by the order of the court rendered null and void at the moment when the Court of Criminal Appeal decides to substitute for it a different sentence, so as to make that earlier sentence null and void and of no effect for the future from that point of time onwards, but not so as to render it null and void ab initio, namely, as from the date when it was passed."