There are actually 3 editions of Frankenstein. There’s the first edition published in 1818, then the revised edition published in 1831, and in between the two there is an 1818 manuscript that Mary Shelley made changes to and gave to a friend in 1823. James Rieger published an edition in 1974 that incorporated all the deletions and additions that Mary made in the 1823 copy. Cancellations are enclosed in angle brackets and additions in square brackets.
It’s very interesting reading Riegers’ edition along with the 1831 edition. That’s a way of reading all 3 actually, because you’re seeing the additions and cancelations made by the 1823 copy, and the 1818 copy is just that text minus the additions and cancelations.






