The Voynich Manuscript Shows Flux Tube Details
The Voynich manuscript, it shows some flux tube details, such as the pleated walls of the tubes, and sometimes disintegration of the flux walls and contents. It's not a complete mystery.
I found (pInterest matched) the same handwriting and same drawings in a manuscript called "Trotula Major" or "Liber Trotula", and here is a link to an example https://ca.pinterest.com/pin/10485011673326243/ There is a wikipedia page about Trotula manuscripts, having several authors.
Here are pInterest links to those Voynich images: https://ca.pinterest.com/pin/420453315234329979/ https://ca.pinterest.com/pin/420453315234329977/ https://ca.pinterest.com/pin/420453315234330298/ https://ca.pinterest.com/pin/420453315234330332/ https://ca.pinterest.com/pin/420453315234330324/ https://ca.pinterest.com/pin/420453315234330285/ https://ca.pinterest.com/pin/420453315234329973/