The door to Mallinckrodt M-102 was locked yesterday afternoon, but it is believed that no one was stuck inside.

Outside the door to the "Division Room," one student sat with his legs crossed. He had been staring at the door since 9 a.m., for about six hours.

It was one year to the day after the Dow demonstration, which had led to the placing of 74 students on probation. It was understood that no action would be taken against yesterday's demonstrator, because, one administration spokesman said, "no one had been substantially inconvenienced."

The sit-inner, who would not reveal his name, said he was stationed outside M-102 "to remember."

Chemistry as Usual

Elsewhere in Mallinckrodt, it was chemistry as usual. No one seemed to know about the trouble at M-102. One student, in his second-floor laboratory, laughed at the mention of another demonstration, and recalled that he had been in his lab when the first one started a year ago.

The businesslike air in Mallinckrodt was typical of the campus as a whole. No one remembered it was the anniversary of Dow. "Next year," shrugged one student on his way to tutorial, "no one will remember Dow."

Dean Glimp could not be reached for comment, but a well-placed sleuth outside his University Hall office reported that he spent the entire afternoon staring dazedly at the clock in his office, and at 5 p.m., let out a whoop and went home.