Laurence Le Guay
'Book of Fixed Stars' (Kitāb suwar al-kawākib al-ṯābita) Virgo (1430-1440)
The ‘Tree of the Principles and Grades of Medicine’ as given in the ‘Liber Principiorum Medicinae’ of Raymond Lull in the edition of the ‘Opera omnia’ by Ivo Salzinger (Mainz, 1721 – 1742). The ‘rota’ gives the four ‘humores’ with a dual four-fold subdivision of the characters: A – hot (calor), B – dry (siccitas); C – wet, moist (humiditas) and D – cold (frigiditas). The ‘Lullian’ series is not directly connected to the elements, but could be interpreted as the ‘Aristotelian type’: fire – air – water – earth.
Library of Congress Prints and Photographs Division Washington, D.C.