"I can see no reason for saying that a discovery of undercharge can only arise where a new fact has been discovered. The words are apt to include any case in which for any reason it newly appears that the taxpayer has been undercharged and the context supports rather than detracts from this interpretation."
“…such an apportionment must, … stated, necessarily be on a rough and ready basis. One must, of course, be on strict guard to avoid abuses such as by provision of benefits merely in reality adding to the remuneration of a director; but to my mind no precise formula can as a rule be applied.”