José Arcadio Buendía conversed with Prudencio Aguilar until dawn. A few hours later, worn out by the vigil, he went into Aureliano's workshop and asked him: "What day is today?" Aureliano told him that it was Tuesday. "I was thinking the same thing," José Arcadio Buendía said, "but suddenly I realized that it's still Monday, like yesterday. Look at the sky, look at the walls, look at the begonias. Today is Monday too." Used to his manias, Aureliano paid no attention to him. On the next day, Wednesday, José Arcadio Buendía went back to the workshop. "This is a disaster," he said. "Look at the air, listen to the buzzing of the sun, the same as yesterday and the day before. Today is Monday too." That night Pietro Crespi found him on the porch, weeping for Prudencio Aguilar, for Melquíades, for Rebeca's parents, for his mother and father, for all of those he could remember and who were now alone in death. He gave him a mechanical bear that walked on its hind legs on a tightrope, but he could not distract him from his obsession. He asked him what had happened to the project he had explained to him a few days before about the possibility of building a pendulum machine that would help men to fly and he answered that it was impossible because a pendulum could lift anything into the air but it could not lift itself.
On Thursday he appeared in the workshop again with the painful look of plowed ground. "The time machine has broken," he almost sobbed, "and úrsula and Amaranta so far away!" Aureliano scolded him like a child and he adopted a contrite air. He spent six hours examining things, trying to find a difference from their appearance on the previous day in the hope of discovering in them some change that would reveal the passage of time. He spent the whole night in bed with his eyes open, calling to Prudencio Aguilar, to Melquíades, to all the dead, so that they would share his distress. But no one came. On Friday. before anyone arose, he watched the appearance of nature again until he did not have the slightest doubt but that it was Monday. Then he grabbed the bar from a door and with the savage violence of his uncommon strength he smashed to dust the equipment in the alchemy laboratory, the daguerreotype room, the silver workshop, shouting like a man possessed in some high-sounding and fluent but completely incomprehensible language. He was about to finish off the rest of the house when Aureliano asked the neighbors for help. Ten men were needed to get him down, fourteen to tie him up, twenty to drag him to the chestnut tree in the courtyard, where they left him tied up, barking in the strange language and giving off a green froth at the mouth. When úrsula and Amaranta returned he was still tied to the trunk of the chestnut tree by his hands and feet, soaked with rain and in a state of total innocence. They spoke to him and he looked at them without recognizing them, saying things they did not understand. úrsula untied his wrists and ankles, lacerated by the pressure of the rope, and left him tied only by the waist. Later on they built him a shelter of palm brandies to protect him from the sun and the rain.