reg. 155 (a), which provides a fixed period of imprisonment in sub- stitution for life. Regulation 155 existed in the 1923 regulations, but when in 1940 the regulations were repealed reg. 155 was not re-enacted.
It is contended, however, for the applicant that at the time of the repeal in 1940 a right or privilege under the existing 1923 regulations had been acquired and had accrued. Section 17 of the Interpretation Act 1918-1938 provides that the repeal of regulations shall not, unless the contrary intention appears-" (a) affect any right, privilege, obligation, or liability acquired, accrued, or incurred under any regulations SO repealed." Upon that provision the argument is founded that the applicant had a right measured by the number of marks earned to be released when he had completed the sentence of twenty years under reg. 155 of 1923. But at the time in 1940 when the repeal took place the applicant was only on the way towards acquiring a right to release. He had not then acquired a right to release. Neither had he acquired a right to have the regulations continued in operation in respect of himself. The applicant is not assisted by S. 17 of the Interpretation Act.
It is an essential part of the applicant's argument that the regulations give a right to release subject to the application of the marks system. The regulations are made under the Prisons Act 1903-1918 (W.A.) S. 21 (8). That provision is "The Governor may make regulations for all or any of the following purposes (that is to say) :-
(8) Providing for the ordinary remission of portions of sentences, and for extraordinary remission for special services, and for the forfeiture of remission for misconduct." The regula- tions authorized include regulations providing for ordinary remis- sion of portions of sentences. This provision does not authorize a regulation reducing the sentence imposed by a court in accordance with a statute. Section 21 (8) authorizes only a regulation for remission of sentences and not for the imposition of another sentence than that imposed by a court. If reg. 155 were interpreted as itself reducing all life sentences to sentences for twenty years, the validity of the regulation would be doubtful. But it is not necessary to decide this question because reg. 155 does not purport to give any right to a prisoner. The word which is used in reg. 155 is the word may." The prisoner may be released. The provision is not that the prisoner shall be released, and S. 32 of the Inter- pretation Act at least assists the argument that "may" should be interpreted here as conferring a power, and not as granting a right.
But, as is said in the judgment of the Full Court of the Supreme Court, the terms of reg. 155 are (apart from the point last-mentioned)