Vague reports from police officers, to the effect that something unusual in the nature of secret societies was going on among the people, began to reach the government, but no great attention was paid to them, until the evening of August nineteenth, when the parish priest of Tondo was informed by the mother-superior of one of the convent-schools that she had just learned of a plot to massacre all the Spaniards. She had the information from a devoted pupil, whose brother was a compositor in the office of the _Diario de Manila_. As is so frequently the case in Filipino families, this elder sister was the purse-holder, and the brother's insistent requests for money, which was needed by him to meet the repeated assessments made on the members as the critical hour approached, awakened her curiosity and suspicion to such an extent that she forced him to confide the whole plan to her. Without delay she divulged it to her patroness, who in turn notified the curate of Tondo, where the printing-office was located. The priest called in two officers of the Civil Guard, who arrested the young printer, frightened a confession out of him, and that night, in company with the friar, searched the printing-office, finding secreted there several lithographic plates for printing receipts and certificates of membership in the Katipunan, with a number of documents giving some account of the plot. Then the Spanish population went wild. General Ramon Blanco was governor and seems to have been about the only person who kept his head at all. He tried to prevent giving so irresponsible a movement a fictitious importance, but was utterly powerless to stay the clamor for blood which at once arose, loudest on the part of those alleged ministers of the gentle Christ. The gates of the old Walled City, long fallen into disuse, were cleaned and put in order, martial law was declared, and wholesale arrests made. Many of the prisoners were confined in Fort Santiago, one batch being crowded into a dungeon for which the only ventilation was a grated opening at the top, and one night a sergeant of the guard carelessly spread his sleeping-mat over this, so the next morning some fifty-five asphyxiated corpses were hauled away. On the twenty-sixth armed insurrection broke out at Caloocan, just north of Manila, from time immemorial the resort of bad characters from all the country round and the center of brigandage, while at San Juan del Monte, on the outskirts of the city, several bloody skirmishes were fought a few days later with the _Guardia Civil Veterana_, the picked police force.