At the Strand corner of the Square a squad of police was being formed, in order to co-operate with some reinforcements which were arriving, when suddenly there was a terrific explosion. A bomb filled with picric acid had been thrown by an Anarchist, and when the smoke cleared, the shattered remains of thirty-four constables lay strewn upon the roadway! This was but the first of a series of dastardly outrages. The advice of the Anarchist leaders in their inflammatory speeches had been acted upon, and in half an hour a number of bomb explosions had occurred in the vicinity, each doing enormous damage, and killing numbers of innocent persons. After the petard had been thrown in Trafalgar Square a loud explosion was almost immediately afterwards heard in Parliament Street, and it was soon known that a too successful attempt had been made to blow up the Premier's official residence in Downing Street. The programme of the outrages had apparently been organised, for almost before the truth was known another even more disastrous explosion occurred in the vestibule of the War Office in Pall Mall, which wrecked the lower part of the building, and blew to atoms the sentry on duty, and killed a number of clerks who were busy at their important duties in the apartments on the ground floor. Through Pall Mall and along Whitehall the mob ran, crying "Down with the Government! Kill the traitors! Kill them!" About three thousand of the more lawless, having looted a number of shops, rushed to the Houses of Parliament, arriving there just in time to witness the frightful havoc caused by the explosion of two terribly powerful bombs that had been placed in St. Stephen's Hall and in Westminster Abbey. A section of the exultant rioters had gained access to the National Gallery, where they carried on ruthless destruction among the priceless paintings there. Dozens of beautiful works were slashed with knives, others were torn down, and many, cut from their frames, were flung to the howling crowd outside. Suddenly some one screamed, "What do we want with Art? Burn down the useless palace! Burn it! Burn it!" This cry was taken up by thousands of throats, and on every hand the rebels inside the building were urged to set fire to it. Intoxicated with success, maddened by anger at the action of the police, and confident that they had gained a signal victory over the law, they piled together a number of historic paintings in one of the rooms, and then ignited them. The flames leaped to the ceiling, spread to the woodwork, and thence, with appalling rapidity, to the other apartments. The windows cracked, and clouds of smoke and tongues of fire belched forth from them.