His treatises De mensura astrolabii and De utilitatibus astrolabii (to be found, on the authority of Salzburg MSS., in Pez, Thesaurus anecdotorum novissimus, iii.) being the first contributions of moment furnished by a European to this subject, Hermann was for a time considered the inventor of the astrolabe.
Martene's Thesaurus nevus Anecdotorum, 1717, vol.
His principal work is a laborious Lexicon Rationale, sive Thesaurus Philosophicus (Rotterdam, 1692; new and enlarged edition, Leuwarden, 1713).
He also published an edition of Buchanan's works, continued Graevius's great work, Thesaurus Antiquitatum et Historiarum Italiae, and wrote a treatise De Vectigalibus populi Romani (1694) and a short manual of Roman antiquities, Antiquitatum Romanarum Brevis Descriptio (1711).
He published Magnalia Dei in locis subterraneis (Brunswick, 1727), Historia naturalis curiosa lapidis (1727), and Thesaurus subterraneus Ducatus Brunsvigii (1728).
For hymnology see Daniel, Thesaurus Hymnologicus (4 vols.); Neale's translations of Eastern Hymns; B.