This Bible is in Latin, so don't expect easy reading. Notice
that there are chapter divisions, but no verse divisions. Paragraphs are not indented, but simply
indicated with a Paragraph Mark ("¶").
The outside columns show the Eusebian Numbers; they're in
Roman numerals. Eusebius' section numbers are in lower-case letters
(like "cxciiii"); immediately below that is the Canon Number
in an upper-case letter (like "V"). This made it easy
(more or less) to study parallel passages.
The columns closest to the text show cross-references similar to how we find them in
todays' Bibles. Notice also in this column that there are Capital Letters —
A, B, C, etc. (you have to look closely; they're a little smeared.) Before
verse divisions were created in the 1550's, chapters were divided into six or seven lettered sections;
each letter covered 5 or 6 of today's verses. That's why you'll find cross references like:
Matt.xi.b (Matthew Chapter 11 Section B).