Final answer:
Without the relevant text, it's not possible to determine the visible reminder of Gregor's injury from the end of chapter 2 as the provided excerpts are from different works and do not mention Gregor.
Step-by-step explanation:
The visible reminder of Gregor's injury at the end of chapter 2 is not explicitly detailed in the provided text excerpts, which appear to come from various different literary works.
As such, it's impossible to accurately state what remained as a reminder of his injury without additional context or reference to the specific text detailing Gregor's story.
The literary excerpts given do not seem to pertain to the character Gregor, instead referencing multiple characters and circumstances from distinct narratives.
In chapter 2 of the book, the main character Gregor is injured and sustains a gunshot to his hand. The injury is described as a 'ragged hole' from which blood drips. This injury remains as a visible reminder of Gregor's injury throughout the story.