5. In the present case, however, the plaintiff points to the language of s. 5 which purports to impose a levy on all hens kept for commercial purposes, and finds in the italicized words a sufficient indication that the levy is imposed in virtue of its trade. Liability to pay the levy is, it is agreed, not, however, fixed or ascertainable by reference to the extent of the owner's trade in eggs though it is imposed, it is said, in respect of hens kept for commercial purposes, and that must mean kept for the purpose of trade or commerce. It is the italicized words which make all the difference, and it is conceded that if they had been omitted, there could be no objection that the provisions of the Act would infringe s. 92. In my view it was a precisely similar situation which was considered in Grannall's Case[1955] HCA 6; (1955) 93 CLR 55 In terms the question to which the Court gave a negative answer was whether s. 22A of the Dairy Industry Act, 1915-1955 (N.S.W.) constituted an infringement of s. 92. But that section was considered as one of a catena of sections - ss. 22A, 22B, 22C and 22D - which were introduced into the Act in 1940. They formed, it was said, a "coherent set of provisions". It was pointed out that, under the Act as it stood previously to the amendment, no person could use any premises as a dairy produce factory unless he was the holder of a licence issued under the Act. "Dairy produce factory" was defined to mean a building or place where butter, cheese, dried milk, condensed milk, concentrated milk, malted milk, or any other prescribed product of milk, or margarine is prepared or manufactured, or where milk or cream is tested, graded, pasteurized or cooled preparatory to manufacture, or where butter or cheese is processed after manufacture. To these provisions ss. 22A, 22B, 22C and 22D were added so that the first of these sections forbade the manufacture or preparation of cooking or table margarine in a dairy produce factory except under and in accordance with a licence issued pursuant to s. 22A. It is quite impossible, I think, in these circumstances, to regard such a provision as other than one which plainly forbade the manufacture of margarine for commercial purposes, or for sale, and the reasons of the Court clearly recognized that this was so. Also for what it is worth, it may be noticed that although the Court gave reasons for thinking that s. 22C in its operation might, in some circumstances, infringe s. 92, no suggestion was made that the provisions of s. 22B were open to question on any such ground. That section provided that notwithstanding anything in the Act or in any licence, any person who holds a cooking margarine licence may manufacture for sale only to any prescribed person or class of persons in lumps of not less than fourteen pounds, margarine which contains beef fat or mutton fat, or beef fat and mutton fat in a quantity of between seventy-five and ninety per cent. by weight of the total quantity of fat and oil contained in such margarine. (at p402)