The law in question in the present case is not simply a general public health measure; it has two distinct aspects, one relates to that area of public health concerned with the fixing and enforcement of standards for perishable foodstuffs, the other to an elementary form of consumer protection and fair dealing in trade, requiring fair weights and measures and accurate labelling as to weights and quantities. This latter aspect, no less than that of public health, possesses a long history of legislative intervention and accompanying public acceptance and, in terms of permissible regulation for the purposes of s. 92, can, I think, stand in no different position from public health. Indeed, in their particular application to foodstuffs, the history of each in English law has been closely interwoven. As early as the thirteenth century the Assize of Bread and Ale, 51 Hen. III c. 1 (1266), prescribed varying qualities of bread and standard weights of loaf dependent upon the particular quality and also laid down general standards of weight for food and drink. Instances recur throughout the following centuries of laws concerning weights and measures and of presentments for the use of fraudulent weights and measures: Holdsworth, History of English Law, vol. II, pp. 222, 382, 390 and 467. Bread remained for long the especial concern of the legislature, as attested to by the numerous Acts of the eighteenth and early nineteenth centuries concerned not only with its price but also with its purity and freedom from adulteration. For at least the past hundred years legislation as to the purity of foodstuffs generally has been on the statute books: the Adulteration of Food or Drink Act 1860 U.K. and its successors were followed by similar colonial legislation and in 1878 consolidating legislation introduced a comprehensive code of Imperial weights and measures, continuing the system established in 1824 by 5 Geo. IV c. 74. Throughout the present century all Australian States have legislated extensively upon food standards and weights and measures.