Trying Iron Gall Inks - Rohrer and Klingner, Scabiosa
A bit of history Iron gall ink is a purple-black or brown-black ink made from iron salts and tannic acids from vegetable sources1 As a fountain pen enthusiast, it was pretty interesting to learn about the history and modern incarnations of this particular type of inks. Both Leonardo’s notebooks and Isaac Newton’s notebooks seemed to have contain writing primarily with iron gall inks, such as the following image from a Leonardo’s notebooks2....