A History of Inventions, Discoveries, and Origins, Volume 2 (of 2)Note 578 — PRINCE RUPERT’S DROPS. LACRYMÆ VITREÆ.William Johnston translationIn his Observations on Neri Ars Vitraria, Amstel. 1668, 12mo.◇Copy noteReturn to PRINCE RUPERT’S DROPS. LACRYMÆ VITREÆ.