Velasco left the city on June 10, 1611, and Archbishop Guerra retired to Tacubaya to await the news of his sailing from Veracruz.

He was mounted on a fiery charger, beneath a canopy whose poles were carried by the councilors of the city, on foot and dressed in crimson velvet.

The procession stopped first at the cathedral, where a solemn Te Deum was sung, and then passed to the viceregal palace, where Guerra officially took office.

He received a scientific report from the noted mathematician Ildefonso Arias that the project could not succeed because of the subterranean connection to the Río Acolhuacán.

A few days later the Audiencia suppressed a supposed conspiracy of blacks to kill whites that was take place on Holy Thursday of 1612, hanging 29 men and four women.