Written by the author to accompany his Oxford Classical Texts edition of Aulus Gellius’ Noctes Atticae, this volume presents more expansive discussions and explanations of choices of readings at various places in the text than would be possible within the narrow confines of the edition’s apparatus criticus. The grounds adduced are generally grammatical in the modern sense of the word, concerning accidence, vocabulary, or syntax, but sometimes invoke palaeography, logic, or other matters of content; previous scholars, and also translations, are also frequently cited in order either to credit the person first on record as having understood the text correctly or to indicate the source of a current misinterpretation.