Part II of the Act establishes a statutory corporation called the Dairy Industry Authority of New South Wales ("the Authority"). Its role is generally described in s. 17 as "the regulation and control of the quality, supply and distribution of milk for the purposes of ensuring the wholesomeness and purity of milk and dairy products in the interests of public health". Detailed powers given to the Authority include powers of inspecting and sampling milk (s. 18), of directing the actions of dairymen or milk vendors (s. 18), of engaging directly in the trade and manufacture of milk and milk products (s. 19), to carry out research on improving the dairy industry (s. 20), to delegate the exercise of its powers (s. 21) and to acquire land and undertakings (Pt VI). The Authority is given control over milk, which becomes vested absolutely in the Authority upon being supplied (s. 23). No definition is given of the words "supply" and "supplied", as to "milk supplied to the Authority": see discussion in Andaloro v. Wyong Co-operative Dairy Society Ltd. [38] . However, I am of opinion that, in relation to the facts of the present cases, the treated milk and milk products from Victoria were supplied in New South Wales for human consumption there when they entered New South Wales from Victoria in the first plaintiff's vehicles, whether destined for sale in Albury or Junee. At that point of time, assuming validity of the Act, the milk would become vested in the Authority. The Authority may choose to accept delivery of the milk on terms fixed by it (s. 24), and make payments to the dairymen (s. 25), or the Authority may refuse to accept delivery of the milk. Where milk supplied in New South Wales is not accepted by the Authority, it remains vested in the Authority and the supplier of the milk may not sell or dispose of it for human consumption or for use by man. The Authority is given sweeping protection from civil action (see s. 26(5), s. 29, s. 32, s. 81), and may even conclusively certify fictitious facts about any delivery to it (s. 26). Registration of dairymen and milk vendors is made compulsory (s. 33) and the Authority has a wide discretion as to whom it issues certificates or registration (s. 34) and as to the conditions to be attached to such certificates (s. 33(6)). It should be observed that the Authority itself does not retail in milk. Section 35, which came into effect on 1st January 1972, makes it an offence to sell other than to a milk vendor, or to a dairy produce factory within the meaning of the Dairy Industry Act, 1915, milk which has not been pasteurized within the meaning of the Pure Food Act and regulations made thereunder, or treated in the prescribed manner. By reason of s. 14A of the Interpretation Act, 1897-1972, s. 35 relates to the selling of milk in New South Wales. Part IV of the Act provides for the continuation and extension of the existing marketing quota system. Part V establishes a Dairy Industry Price Tribunal to investigate and recommend prices in the industry, which prices are then fixed by order of the Governor. A Dairy Industry Artificial Breeding Advisory Board is established in Pt VII. The remaining provisions of the Act complete the machinery of the scheme. Finally, the Minister is given power in s. 7 to exempt people, premises, milk, or parts of the State from any provisions of the Act (except s. 35), but may not exempt a person except as to milk obtained from a dairy herd certified by the Chief of the Animal Husbandry Division of the Department of Agriculture to be free of tuberculosis and other disease, to which herd no animal has been admitted subsequent to such certification: see s. 35(2). This conspectus of the Act indicates the scope and design of the scheme it establishes controlling all aspects of the dairy industry in New South Wales.