any part of a State over another State; (d) giving preference to any part of a State over any part of another State.
(II.) Sec. 99 forbids laws or regulations which accord preferential treatment to persons or things as a consequence of local situation in any part of the six States, regardless of all other circumstances (R. v. Barger 1, per Griffith C.J., Barton and O'Connor JJ.).
(III.) The section is not infringed if the preferential treatment is a consequence of a number of circumstances, including the circum- stance of locality (R. v. Barger 2, per Isaacs and Higgins JJ.; Cameron's Case 3; James v. The Commonwealth 4 ).
(IV.) The section operates objectively in the sense that the purpose or motive of the Legislature or Executive in giving preference by a law of commerce or revenue is not a relevant question, e.g., it is irrelevant that the Legislature or Executive desires to facilitate or encourage inter-State or overseas trade, or to increase revenue (Cameron's Case 5 ).
(v.) Sec. 99 may apply although the legislation or regulations contain no mention of a State eo nomine, e.g., the section may be infringed if preference is given to part of a State (e.g., that part of New South Wales which is represented by the port of Sydney) over another State (e.g., Western Australia) or any part of another State (e.g., Fremantle or Brisbane).
(VI.) To prove infringement of sec. 99 it is not sufficient to show discrimination based on mere locality; it must also be shown that, as a consequence of the discrimination, tangible benefits, advantages, facilities or immunities are given to persons or corporations (per Dixon J., Crowe v. The Commonwealth 6 ).
It is necessary to examine the Transport Workers (Seamen) Regulations in relation to seamen for the purpose of determining two distinct questions: first, whether, solely as a result of their opera- tion, tangible benefits, advantages, facilities or immunities accrue to any persons or class of persons; second, whether such accrual is a consequence of geographical situation in any part of the six States, regardless of all other circumstances. As will appear from a later