The whole east of Paris was shaken. A pyramid of flame, of molten lead, human remains, burning timber and bullets burst forth from the Champ-de-Mars to an enormous height, and showered down upon the environs. Four houses fell in; more than forty persons were wounded, and the catastrophe would have been still more terrible if the firemen of the Commune had not torn waggons of cartridges and barrels of gunpowder from the midst of the flames. A maddened crowd gather, and believe in a crime; a few individuals were arrested, and an artillerist was taken to the Ecole Militaire. Who was the culprit? Nobody knows. Neither the Council nor the procureur of the Commune examined the affair. Yet the Committee of Public Safety announced in a proclamation that it held four of the culprits, and Delescluze that the case was to be sent before the court-martial. No more was heard about it, although it was as much the duty as the interest of the Council to throw light upon this affair. A serious inquest would probably have revealed a crime. The women, who usually left the factory at seven o'clock, had been on that day dismissed at six o'clock. It has been seen that Charpentier asked Corbin for dynamite; it might have been very useful to the conspirators to spread panic with one stroke at the War Office, the Ecole Militaire, the artillery park and the huts of the Champ-de-Mars, which were always occupied by a few Federals.[173] Paris firmly believed in a plot. The reactionists said, "This is the revenge for the Vendome column." It had been pulled down the evening before with great ceremony. Its demolition, the idea of which had become quite current during the first siege,[174] was decreed on the 12th April.[175] This inspiration, popular, humane, profound, showing that a war of classes was to supersede the war of nations, aimed at the same time a blow at the ephemeral triumph of the Prussian. The rather expensive preparations, costing almost 15,000 francs, had been much protracted, owing to the lukewarmness of the engineer and the continual efforts to suborn the workmen. On the 16th May, at two o'clock, an immense crowd thronged all the neighbouring streets, rather anxious as to the result of the operation. The reactionists foretold all sorts of catastrophes; the engineer, on the contrary, affirmed that there would be no shock; that the column would break to pieces during its descent. He had sawn it horizontally a little above the pedestal; a slanting groove was to facilitate the fall backwards upon a vast bed of faggots, sand, and dung, accumulated in the direction of the Rue de la Paix.