Upperclassmen are once again allowed to eat lunch at the Freshman Union, but only on weekdays during three 15 and 20 minute periods, Henry C. Moses, dean of freshmen, announced yesterday.

In a memorandum to all House committee chairmen, Moses said upperclassmen may eat in the Union Monday through Friday from 11:30 to 11:50 a.m., 12:30 to 12:45 and 1:30 to 1:45 p.m.

He made the decision when it "became evident that the Union was not very crowded at those certain specified times," he said.

Although Moses expressed confidence that upperclass dining can be limited to the three intervals, the manager charged with enforcing the restricted lunch periods said yesterday, "It is not going to work."

"Somebody with more authority than I have is going to have to be there to tell (upperclassmen) they can't eat because I'm not going to turn a student away," Lewis Tolleson, Jr., manager of the Union dining hall said.

Gates to Hell

Moses and W.C. Burris Young '55, associate dean of freshman, said yesterday they will ask the Union porters to stand at the entrance to the Union during non-interhouse periods and warn upperclassmen not to join the freshman lunch line.

Last month, Moses ordered the Union to suspend interhouse lunches because he feared lunchtime would no longer be "an enjoyable experience for freshmen" if the dining hall was overcrowded.

He came under considerable student pressure during the past week, however, particularly from student members of the Committee on Housing and Undergraduate Life and various House Committee delegations, which appeared at University Hall to protest the Union's closing and suggest alternatives.

The Leverett House Committee had a resolution pending to "suspend all interhouse for freshmen" at that House if the decision to ban on upperclass dining at the Union had been made permanent. Brad Behrman '78, Leverett House Committee chairman, has since sent a letter to Moses praising his handling of the matter.

House committee chairmen and CHUL representatives contacted yesterday were unanimous in their approval of Moses's decision to open the Union on a limited basis.