Note 1373 — Chapter LIV
Reading edition
XII, 21, “hi lapidi dicuntur celidonii et sunt preciosi maxime quando extrahuntur de pullo antequam tangat terram ut dicitur in lapidario ubi eorum virtutes describuntur, ut dicit Constan. Sanguis de dextra ala extractus oculis medetur....” But perhaps the “ut dicit Constan.” goes with these last words rather than the preceding.