If the Jesuit Martin Delrio 1551-1608 is remembered at all today, it is for his Disquisitiones magicae 1599-1600, a voluminous tome on witchcraft and superstition which was reprinted numerous times until 1755. pThe present volume recovers the lost world of Delrio's wider scholarship. Delrio emerges here as a figure of considerable interest not only to historians of witchcraft but to the broader fields of early modern cultural, religious and intellectual history as well. As the editor of classical texts, notably Senecan tragedy, Delrio had a number of important philological achievements to his name. A friend of the Flemish philosopher Justus Lipsius 1547-1606 and an enemy of the Huguenot scholar Joseph Scaliger 1540-1609, he played an important part in the Republic of Letters and the confessional polemics of his day. Delrio's publications after his admission to the Society of Jesus the Disquisitiones included marked a significant contribution to the intellectual culture of the Counter-R