Alchemical Symbolism in the VMS

[Barbrey]

I tried to google the other author mentioned, Haage, (I believe this is Bernard Dietrich Haage) that said the same thing but all the results are in German. He might have sourced it. 

@bi3mw did you mention it’s used as tria prima in the Book of the Holy Trinity?  And by the way, are you able to read the Buch?  I’ve only been able to read about it as I don’t read either language and there’s no English translation.