Beinecke Library’s altered foliation for folio 86v.

The map which occupies a single open page was originally described on Yale University’s “bibliotecapleyades” site as folio 86v.

This seems to have been a simple and sensible description for it.

The Beinecke Library site now describes the diagram as “folio 85v and 86r”

This will mean some inconvenience for followers of this blog; I’ll have to add a note to every post written using the original foliation.

For the sake of consistency, any future posts will still refer to the map as “folio 86v” in headings, but the later foliation will be referenced in in square brackets after the first mention in the body of text.

Map new foliation



  1. Diane, for my sanity’s sake, please let me reiterate that what ever Boenicke has done to the foliation numbers: that large circular diagram which they are referring to folios 85v and 86r was known and STILL IS KNOWN as the ALBAN LAKE which has a sister lake called NEMI LAKE. Various Papal/Cardinal entities spent their summers in their Palaces. If you can bring up a large image of the Alban Lake you will find a little-discussed notation on the roadside, which indicates a Roman-built drainage tube.
    Several months ago, I went online to see how the anthropologists and historians were doing.
    I didn’t find much anything going on above ground (at the road) BUT, several years ago a young tourist couple came upon an underground Roman Bath House. The Roman Baths were getting their water from the Alban Lake. The Bath House was dedicated to DIANA. That mysterious roadside (Roman tunnel) was the water channel to the underground bathhouse.
    I’m pretty sure you are going to follow up on this?


    • Bobette, I understood that you believed Athenasius Kircher had been on a tour of the Alban Lakes, and was in some way responsible for the diagram. I recall you mentioning a parallel which you perceived between the drawing(s) on folio 86v (= Beinecke 85v-86r) and one in Kircher’s published works. The point seemed a fairly general one, and I supposed it abandoned when you first began seeing the text as written in Latin-Nahuatl and proposing the author to be Frey Sahagun.


  2. Yes, Diane, because the two historians (Kircher and Sahagun) were each discussing a large Lake or similar regions of “Alban” (Kircher & Alban Lake and Lake Nemi ) Sahagun’s discussion of the lake near Tl-a-tl-o-co (Mexico).
    I really do think you would thoroughly enjoy reading/viewing the entire contents of Fray Sahagun’s so-called Florentine Manuscript (which is ALL about Sahagun’s sixty years’ adventures — which he dictated to at least two scribes and an artist or two. Compare his magnificent manuscript for New Spain’s natural water features/wonders with Athanasius Kircher’s book about the prominent water features (Lakes Alban and Nemi, gods and goddesses (and my recent discussion in re the hot spring bath-house recently discovered near the Alban and Lake Nemi.
    Several months ago I discussed the recent archaeology which is ongoing both in Italy and Mexico.


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