[split] Does Voynichese evolve from A to B?

[Jorge_Stolfi]

So why is x in Herbal B and not Herbal A?

Herbal-A and Herbal-B probably had some difference histories, like being copied from two independent herbals or in two in separate sessions.  So maybe the Author wrote "toxic" in one and used '☠" in the other.   

Or maybe he sorted all plants into harmless ones that can be consumed regularly (Herbal-A) and plants that should be consumed only when needed (Herbal-B), some of them being particularly ☠.

All the best, --stolfi