[2] Lemnius studied medicine at the University of Leuven under Rembert Dodoens and Konrad Gesner;[3] and under Vesalius at Padua.
Lemnius was influenced, too, by the "airs, waters, places" doctrine from the Hippocratic Corpus.
[12] The work attempted to reconcile natural philosophy as found in classical sources with Christian doctrine, particularly on generation and reproduction, while emphasising extraordinary aspects.
[17] He contributed to demonology, with Johann Weyer, by suggesting that mental illness and disturbance could be physically caused, rather than being a result of outside influence.
It was later combined with a German manual on midwifery by Jakob Rüff, to create Aristotle's Masterpiece, a 17th-century work in English of advice on sex and reproduction, still sold in later editions in the 1930s.