VMs: Re: Mediaeval book written entirely in cipher

[Jorge Stolfi <stolfi@xxxxxxxxxxxxx>]

    > a) Giovanni Fontana wrote two entire books in cipher

Do you know their sizes (page counts)?

    > b) The cipher is a simple substitution, and it is certainly not
    > Voynichese.

I presume that the plaintext language was Latin, right?

    > c) The Paris manuscript is partly about mechanical memory devices:
    > there are illustrations of them and some of them look like Lullian
    > rings or Vigenere cipher wheels. There are also pictures of spirals
    > and one diagram of a circle of stars which looks more like the VMS
    > star circles than anything I have seen.
    
Wow... 

All the best,

--stolfi