Definition: In this task, you will use your knowledge about language (and common sense) to determine what element the marked number refers to. The numbers are marked with two underlines around them, like: _ number _. Your answer should be chosen from the given text, and should not contain other words.
Input: Reinette Poisson:  There is a vessel in your world where the days of my life are pressed together like the chapters of a book so that he may step from _ one _ to the other without increase of age , while I , weary traveller , must always take the slower path .

days