The pro-war Counter Teach-in broke up in turmoil last night less than an hour after it began when Archibald Cox '34, trouble-shooter for the University, asked J. Lawrence McCarty, the moderator, to call a halt to the abortive meeting.

The cancellation came after 45 minutes of ceaseless chanting, clapping, and booing by fiercely militant demonstrators who formed at least half of the audience of 1000.

Cox announced last night that the University will proceed with every means at its command in disciplinary action against every person who can be identified as disrupting the meeting-possibly including at least one member of the Faculty.

Cox added that the University planned to use the testimony of Senior Tutors-virtually all of whom attended the teach-in at the request of Charles P. Whitlock, assistant dean of the College-and other officers, as well as films from two University motion-picture crews.

Cox added that the University might bring criminal charges, "if available," against the disrupters, but said that he doubted that criminal statutes would apply.

Twenty minutes after he had pleaded vainly with the crowd to be quiet to allow him to speak. Cox, huddled with McCarty at the rear of the Sanders Theater platform, said, "In view of the crowds of people massing outside the building, I ask you to call off the meeting."

Cox made the decision at 8:45 p.m., when Harvard Police Chief Robert Tonis informed him that a rowdy crowd outside Memorial Hall was attempting to force its way in. Some of the 150 people outside had scuffled with police attempting to close the double doors to the Sanders lobby, and others had scaled a fire escape and broken a fire door.

Cox beckoned McCarty, an official of the American Conservative Party, and Laszlo Pasztor '73, a member of Students for a Just Peace, the sponsoring group, and asked them to cancel the meeting.

"Will you make than an order?" Pasztor said. Cox complied, and McCarty, saying, "You're the boss," began to usher the invited guests-Anand Panyarachun, Thai Ambassador to Canada; Nguyed Hoan, an aide at the South Vietnamese embassy in Wash-ington; Dolf Droge, a White House Vietnam adviser; and I. Milton Sacks, professor of government at Brandets-toward the door.

Before he left, however, Sacks strode to the podium and bellowed "Sieg Heil! Sieg Heil!" through the dead microphone at the jubilant disrupters.

Cox had taken the rostrum at 8:05 p.m. and pleaded with the crowd for ten minutes "on behalf of the President and Fellows."

"You have the power at any moment to disrupt this meeting at any time. But will you please let me speak," Cox implored the chanting, clapping crowd.

"For if this meeting is disrupted-hateful as some of us may find it-then liberty will have died a little and those guilty of the disruption will have done inestimable damage to the causes of humanity and peace," he said.

At the end of his speech, Cox, visibly shaken at the wall of noise which drowned his words, said, "Answer what is said here with more teach-ins and more truth, but let the speakers be heard."

Cox then turned and left the platform. The noise continued unabated.