Starting in the 1930s, Drachmann wrote scholarly papers, primarily on ancient technology, and papers on library science. From 1928–1949 he edited the
Index Medicus Danicus, a
card-index bibliography of Danish medical literature. In the 1950s he was an editor of
Centaurus, in which many of his papers were also published. He was a member of several
learned societies. Drachmann's research focused on medicine, natural sciences and technology in antiquity. He wrote books on "pneumatic medicine",
oil mills, ancient mechanics and
Caesar's Rhine bridges, as well as several articles for the
Realencyclopädie der classischen Altertumswissenschaft and the
Dictionary of Scientific Biography. Drachmann's 1963 book
Mechanical Technology of Greek and Roman Antiquity consisted of a critical translation and commentary on
Hero of Alexandria's
Mechanics (from
Qusṭā ibn Lūqā's Arabic translation), alongside study of other works by Hero,
pseudo-Aristotle,
Vitruvius, and
Oribasius. In mechanics, Drachmann's method combined careful textual analysis with practical mechanical experiments and constructions. His writing was characterized by an insightful but unpretentious and commonsense style. In 1971 he received the
Leonardo da Vinci Medal for his scholarship in the history of technology. Drachmann also studied English literature,
Danish folk tales and
ornithology. == Selected bibliography ==