Ever wondered what Eusebian Canons are?
Neither did I, until I tried (and failed) to navigate a manuscript with them!
That said, the Eusebian Canons are actually a pretty nifty work of ancient biblical scholarship.
Here you can read about the Eusebian Canons found in the Herzog August Bibliothek, MS Cod. Guelf. 84.3 Aug. 2°.
And here’s a peek at the manuscript: