Olson

Appellant was convicted of the possession of marijuana, was placed on probation for five years upon condition that he serve 90 days in jail and he appeals from the judgment.

Appellant was represented by counsel at the trial; thereafter other counsel was substituted and later at his request appellant was substituted and he prosecutes the appeal in propria persona. Pursuant to stipulation, the action was tried upon the transcript of the evidence received at the preliminary examination. Appellant did not testify.

*534 Appellant’s first contention is that there was insufficient evidence to prove that he had knowledge that the cigarettes which were in his possession contained marijuana. The contention is not sustainable. There was ample evidence from which the court could infer that he had such knowledge.

It was shown by the evidence that the police received information that a part of a marijuana cigarette had been discovered in the sock of Olson while he was in the Tweedy Industrial Hospital for treatment. Police went to the hotel where appellant was staying; at their request appellant opened the door of his room; the officers entered and informed appellant that a physician at the…