Seven students were arrested last night by Cambridge police following the largest riot in Harvard Square since 1937, and were booked at Central Square police station on charges of "disturbing the peace."

Police gave the names of the students as Richard N. Brill '42, of Mount Vernon, and Adams House; John G. Buchanan, Jr., 2L, of Pittsburg; Richard G. Harris '42, of New Haven; Royce B. McKinley '42, of Ann Harbor, Michigan; Henry M. Maciog '43, of Hollis Hall and Derby, Conn.; William H. Savage '41 of Eliot House and New York City; and Nicholas Satterlee, 2GSD, of Rochester, N. Y.

Third of Evening

After two abortive riots had been halted by the prompt action of the police and the Yard cops, the third, starting about midnight somewhere in the vicinity of Dunster House and spreading as it traveled north, gained enough momentum to carry it through the Square and to the Cambridge Common before a hurriedly-called squad of 60 blue-coats stemmed its tide.

Forcing the crowd back towards the Square, the police came into conflict with the surging mob, and in the melee they arrested the seven and hustled them off in patrol wagons.

Up to this point, the riot was purely a peaceful affair, causing no more damage than the waking of a few early sleepers and the blocking of traffic in the Square.

The riot was a walking and talking gathering from its beginning. Progressing up Mill Street between Lowell and Winthrop Houses, the spring affected frolickers took up the traditional cry of "Reinhardt," and more men poured out of the dormitories in addition to a few wastebaskets full of water from the Puritan upper windows.

By the time the procession had turned into Dunster Street it was over 100 yards in length and filled the entire width of the narrow road. Passing through the Square it headed toward the Common and Radcliffe, gaining still more strength as Freshmen left their Yard halls to join the throng.

They had reached the Common when the proctors, the Yard cops, and the police arrived on the scene and revived the ancient and honorable custom of collecting Bursar's cards.

Mob Driven Back

When 60 police had arrived the mob was driven back to the Square, and after milling around for a quarter of an hour in front of the First Church of Cambridge and the University Theatre, the rioters gradually dispersed.

The first riot of the evening had occurred as the Freshman Smoker broke up, when a group of Tech men, after returning Rochester, exchanged blows with a few Harvard men outside Memorial Hall.

The other took place at the corner of Plympton and Mt. Auburn Streets at about 10:30 o'clock, and consisted mostly of noise and water bombs.