Special interest attaches to his edition of the Minerva sive de causis linguae latinae (Salamanca: Renaut, 1587) of Francisco Sánchez de las Brozas or El Brocense (ed. C. L. Bauer, 1793–1801), one of the last developments of the study of Latin grammar in its pre-scientific stage, when the phenomena of language were still regarded as for the most part disconnected, conventional or fortuitous.