Passage
When the Codex Vercelli was uncovered in the cathedral library in 1822, scholars were baffled by the physical state of its ninth-century vellum. Pages 45 through 52 exhibited a faint, darkened ring along the upper margin—evidence of exposure to tannin-rich oak gall ink that did not match the iron-gall compound used by the original Anglo-Saxon scribe. This secondary ink, which chemical analysis later revealed to be of Northumbrian origin, was applied over erased runes that had once recorded a vernacular poem. However, the presence of microscopic candle wax droplets *beneath* this secondary writing, but *above* the original Latin scraping, suggested a period of nocturnal study prior to the palimpsest's alteration. Furthermore, the binding itself, a sturdy pigskin wrapper from the late tenth century, showed signs of being stretched to accommodate additional leaves that were subsequently excised before the manuscript crossed the Alps. The Italian monastery’s inventory of 1017 makes no mention of the vernacular text, noting only a 'homiliary of foreign hand,' suggesting that by the time the codex reached its southern home, the runic verses had already been obscured, and the candlelit reader had long since finished their work.
Question
Based on the passage, arrange the following events related to the history of the Codex Vercelli in the correct chronological order, from earliest to latest.
- 1The scraping of the original Latin text on the manuscript leaves.
- 2The deposition of microscopic wax droplets on the vellum.
- 3The application of the Northumbrian oak gall ink over the erased runes.
- 4The cataloging of the manuscript in the Italian monastery's records.