Wikipedia page about this book: https://en.wikipedia.org/wiki/The_Book_of_the_Thousand_Nights_and_a_Night

Preceded by vol 3 PG#3437 and followed by vol 5 PG#3439

There is an improved edition of this book available as #53254.

Here is the listing of titles for the entire series, which span multiple digitization efforts:

Volume 1: #3435, #51252
Volume 2: #3436, #51775
Volume 3: #3437, #52564
Volume 4: #3438, #53254
Volume 5: #3439, #54257
Volume 6: #3440, #54525
Volume 7: #3441, #54778
Volume 8: #3442, #55091
Volume 9: #3443, #55587
Volume 10: #3444, #58360
Supplement Volume 1: #3445, #59156
Supplement Volume 2: #3446, #59953
Supplement Volume 3: #3447, #60889 (part 1), #61974 (part 2)
Supplement Volume 4: #3448, #62140
Supplement Volume 5: #3449, #63266
Supplement Volume 6: #3450, #64384

Release date is 2002-09-01

This etext was scanned by J.C. Byers and proofread by Doris Ringbloom

"The Book of the Thousand Nights and a Night — Volume 04 (of 10)" by Richard Francis Burton is a translation published in 1888. This fourth volume continues Burton's complete, unexpurgated rendering of the Arabian Nights tales from the Islamic Golden Age. Burton's controversial work preserves the sexual content of the original stories through plain, literal translation, accompanied by his extensive scholarly notes on Eastern customs and sexuality. Published privately to circumvent Victorian obscenity laws, this translation remains both celebrated for its completeness and criticized for its archaic style and obsessive focus on erotic material. (This is an automatically generated summary.)

Originally published: The Burton Club, 1885