"Fourthly, that the first of these liquors in a mixture of the alkali and igneous parts of quick-lime with the sulphureous substance of arsenick; for the orpin is a sort of arsenick, as I said before.    From Wordnik.com.  [Forty Centuries of Ink] Reference

In choral ser - vice when I liear — the pcalini; orpin blow To llio full-toiccil clioir beiuw I: i srr\icc liiL, h: inJ aiilhcm clear/.    From Wordnik.com.  [The Countess and Gertrude; Or, Modes of Discipline] Reference

"This last effect does likewise proceed from the defacing liquor; for because upon the digestion of quicklime and orpin, it is a thing impossible for some of the particles will exalt, stop the vessel as close as you will; the air impregnated with these little bodies does mix with, and alter the inks, insomuch that the visible ink does thereby become the less black, and the invisible ink does also acquire a little blackness.".    From Wordnik.com.  [Forty Centuries of Ink] Reference

"There is one thing more to be observed, which is, that the infusion of quick-lime and orpin be newly made, because otherwise it will not have force enough to penetrate.    From Wordnik.com.  [Forty Centuries of Ink] Reference

"Take an ounce of quick-lime, and half an ounce of orpin, powder and mix them, put your mixture into a matrass, and pour upon it five or six ounces of water, that the water may be three fingers breadth above the powder, stop your matrass with cork, wax, and a bladder; set it in digestion in a mild sand heat ten or twelve hours, shaking the matrass from time to time, then let it settle, the liquid becomes clear like common water.    From Wordnik.com.  [Forty Centuries of Ink] Reference