If he saw Codex Sinaiticus - Why did he make the codicology blunder? One possibility, he was shown another manuscript, or a copy. If you're prepared to give such criticism, you must be prepared to take it! Shall we begin to enumerate your Greek paleographical blunders Mr Avery? No. 1 You...
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There are two quires involving Revelation and Barnabas that are smaller quires, fewer leaves in each quire.
Zachary J. Cole describes the Revelation-Barnabas anomaly, while affirming the Sinaiticus norm of quires of 4 sheets, 8 leaves, 16 pages.
Numerals in Early Greek New Testament Manuscripts: Text-Critical, Scribal, and Theological Studies (2017)
https://books.google.com/books?id=B8zQDgAAQBAJ&pg=PA89
Interestingly, this portion of Revelation in א contains an anomaly in quire formation, a feature that may be related to the sudden use of abbreviated ordinals. Whereas the typical quire in א comprises four sheets folded in half (thus comprising eight leaves), quire 90, which contains the end of Revelation and beginning of Barnabas (Rev 20:10-22:21 and Barn. 1:1-14:4), comprises only three sheets (thus comprising six leaves). Quire 91 immediately follows, which is merely a single sheet quire (comprising two leaves) that contains the ending of Barnabas. The reason for the irregularity in makeup of quires 90 and 91 is not obvious, and multiple explanations are possible.
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https://forums.carm.org/threads/cod...e-codex-siniaticus.14468/page-10#post-1248534
John's gospel ends at Quire 81, Folio 6v, and then Romans starts at Quire 82, Folio 1r.
So what you say is untrue. Looking at OT books, there seem to be continuous quaternions, at least between end of Isaiah and start of Jeremiah (is all I've looked at).
Yes, a second anomaly, good catch.
Nazaroo (1957-2018) discusses that here.
Sinaiticus & Mark's Ending (Pt 11): Quire Structure - Synoptics
http://nazaroo.blogspot.com/2011/02/
An examination of the Quires by others has revealed the basic quire structure, and groupings of the folios. This is important, for it gives us important clues as to how the task of writing and compiling the NT was carried off.
The text was written quire by quire (in folded 8 folio sections). However, the planning was carried out on a larger scale, to calculate and provide just enough vellum (a very expensive material) for the task.
John was done separately, on two quires, beginning at the top of a new quire, and the second quire consisted of only three sheets (quire 81 has only 6 folios). The Collection of Paul's letters was begun also on a new quire (82-1), so we know that quire 81 probably never had 8 folios. (Paul follows John in Aleph. 1st Cor. begins immediately after Romans on folio 82-7 verso, column 3, showing that the letters were treated as a group and copied continuously in quires of 8).
However, Dirk Jongkind believes it began as an 8-leaf quire.
While he explains the basic structure, and the anomalies.
New Testament Manuscripts: Their Texts and Their World (2006)
edited by Thomas J Kraus, Tobias Nicklas
One Codex, Three Scribes, and Many Books: Struggles with Space in
Codex Sinaiticus
Dirk Jongkind
https://books.google.com/books?id=oxJYEAAAQBAJ&pg=PA122
The basic physical unit of the codex is the quaternion, a gathering or quire of four sheets folded together. Thus, each quire consists of four sheets and eight folios, what makes 16 pages.4 Assuming that Hermas was the last book included in the original codex, it must have contained around 95 quires, of which 50 survive almost completely. Not all the extant quires are regular. Three quires, which started their life as standard eight-folio quires, have their last one or two folios cut out, apparently because these were left blank.5 Three other quires have less folios, because they were formed by using only one, two or three sheets.6 Despite the occasional glitch, the original design of the codex has been consistently followed throughout.
Quire 58 (the end of the Dodckaprophcton; two folios removed), quire 78 (the
end of Luke; one folio removed), and quire 80 the end of John; two folios removed).
