On October 5, 1917, the petitioner was sentenced after verdict for manslaughter committed May 16, 1917. This sentence is' what is known as an indeterminate sentence, and was that the petitioner be punished by imprisonment “in the state prison at San Quentin for the term of from one to ten years.” This sentence was obviously imposed under the provisions of section 1168 of the Penal Code (Stats. 1917, p. 665), approved May 18, 1917, and which went into effect July 27, 1917, providing that “every person convicted of a public offense, for which public offense punishment by imprisonment in any reformatory or the state prison is now prescribed by law, if such convicted person shall not be placed on probation, a new trial granted, or imposing of sentence suspended, shall be sentenced to be confined in the state prison, but the court in imposing such sentence shall not fix the term or duration of the period of imprisonment.
*692 “(b) It is hereby made the duty of the warden of the state prison to receive such person, who shall be confined until duly released as provided for in this act; provided, that the period of such confinement shall not exceed the maximum or be less than the minimum term of imprisonment provided by law for the public offense of which such person was convicted. . . .
“(d) The governing authority of the reformatory or prison in which such person may be confined, or any board or commission that may be hereafter given authority so to do, shall determine after the expiration of the minimum term of imprisonment has expired, what length of time, if any, such person shall be confined, unless the sentence be sooner terminated by commutation or pardon by the Governor of the state; and if it be determined that such person so sentenced be released before the expiration of the maximum period for which he is sentenced, then such person shall be released at such time as the governing board, commission or other authority may determine.
“(e) The state board of prison directors shall make all necessary rules and regulations to carry out the provisions of this act not inconsistent therewith,” etc.
Petitioner’s first contention is that the statute is violative of article III, section 1, of the constitution of California, providing for the division of the state government into three separate departments,—legislative, executive, and judicial,— and prohibiting the exercise of the powers of one of these departments by either of the others.
In determining this question and the other questions raised by the petitioner it is necessary to consider the nature and purposes of the indeterminate sentence law. It is generally recognized by the courts and by modern penologists that the purpose of the indeterminate sentence law, like other modern laws in relation to the administration of the criminal law, is to mitigate the punishment which would otherwise be imposed upon the offender. These laws place emphasis upon the reformation of the offender. They seek to make the punishment fit the criminal rather than the crime. They endeavor to put before the prisoner great incentive to well-doing in order that his will to do well should be strengthened and confirmed by the habit of well-doing. Instead of trying to break the will of the offender and make him submissive,
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the purpose is to strengthen his will to do right and lessen his temptation to do wrong. If the purpose of the law is to mitigate the punishment, the law is not
ex post facto
unless it can clearly be seen that notwithstanding the beneficence of the law it may result in the individual case in depriving the prisoner of some well-defined right. It has uniformly been held that the indeterminate sentence is in legal effect a sentence for the maximum term. It is on this basis that such sentences have been held to be certain and definite, and therefore not void for uncertainty.
(State
v.
Perkins,
Petitioner claims that the indeterminate sentence law (sec. 1168, Pen. Code) is unconstitutional as to him, for the reason that it is
ex post facto.
This contention is based upon the fact that at the time the offense was committed section 1588 of the Penal Code provided for a reduction from the full term of the sentence imposed by the court of certain credits for good behavior during imprisonment, which, in the ease of the petitioner, would reduce the maximum term of' imprisonment from ten years to six years and five months in the event that he earned full credit for good behavior. The question resolves itself into this: Does the indeterminate sentence law substitute the will and discretion of the board of prison directors as to the time when the prisoner is to be released for the fixed right to a deduction from his term for good conduct? If it substitutes the discretion of the board of prison directors for the statutory right, then we must hold the law
ex post facto,
even though the board of prison directors in the exercise of their discretion might deal more favorably with the prisoner than he would be entitled to under the law giving him definite credits for good conduct. We are satisfied that it was the intention of the legislature in adopting the plan of indeterminate sentence to do away with the legislative plan theretofore in force, by which certain fixed credits for good conduct were given. This law provides that “the governing authority of the . . . prison . . . shall determine . . . what length of time . . . such person shall be confined, unless the sentence be sooner terminated by commutation or pardon by the Governor of the state, and if it be determined that such person so sentenced be released before the expiration of the maximum period for which he is sentenced, then such person shall be released at such time as the governing board, commission, or other authority may determine.” If the board of the prison does not fix the length of time which the prisoner is to serve until the time they are ready to grant him his discharge, there is obviously no opportunity for the operation of the good credit system,
*696
for the prisoner is immediately and completely released. On the other hand, if they fix a future time for his release, if the law concerning credit for good conduct applies, then the prisoner will not be released “at such time as the governing board may determine,” but at some time before that time has arrived. Subdivision f provides for a release in any event “on serving the maximum punishment provided by law for the offense of which such person was convicted.” This law then provides that the prisoner shall serve the maximum term unless before that time the board fixes a shorter time and grants a release. For this reason the law is unconstitutional and
ex post facto
as to the petitioner, whose offense was committed before the enactment of the law.
(Murphy
v.
Commonwealth,
It is ordered that the warden of the state prison at San Quentin deliver the petitioner to the sheriff of the county of Mendocino, to whose custody he is remanded, for judgment by the superior court upon the conviction.
Shaw, J., Sloss, J., Richards, J., pro tem., Melvin, J., and Angellotti, C. J., concurred.
