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Observers, Objects, and the Embedded Eye; Or, Seeing and Knowing in Ptolemy and Galen. Isis 98 (2007) 447-467 — Winner of 2008 Derek Price Prize
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The Ethylene-Intoxication Hypothesis and the Delphic Oracle. Clinical Toxicology 45 (2007) 85-89 [with Jay Foster]
Laws of Nature and Natural Laws. Studies in History and Philosophy of Science 37 (2006) 527-49
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Observation and Prediction in Ancient Astrology. Studies in History and Philosophy of Science 35 (2004) 227-246
Impersonal and Intransitive ἐπισημαίνει. Classical Philology 99 (2004) 78-85
Weather, Why and When. Studies in History and Philosophy of Science 35 (2004) 835-843 [essay review]
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