De Praecipvis Difficvltatibvs In Explicando Secretionis Animalis Negotio : Specimen Qvod Gratiosae Facvltati Medicae In Academia Ienensi Pro Gradv Doctoris Medicinae Et Chirvrgiae Svmmisqve In Medicina Privilegiis Exhibvit ; Ienae D. VIII. Ian. MDCCLXXII. / Avctor Henricvs Carolvs Hardege Wernigerodanvs.