John Rudolph Glauber, The works of the highly experienced and famous chymist… (1689)
“ Of the Virtues of Vitriol in Medicine: first, of it Crude, and its Colcothar. In explaining the virtues of Vitriol, I will first speak of the virtues of it Crude, and of its Colcothar. Therefore, know ye, Vitriol is a famous Purgation, in grievous and difficult Diseases of the Stomach. For it sometimes happens, that the Stomach is distempered by Meats and Drinks, and falls into a Diuturnal Disease, which continues unto death, and by depraved Meats and Drinks, it often comes to pass, that the Sick are either contracted in their Members, or die. ”
