magical work within the third book by such figures as Agrippa and John Dee still lend credence to the idea of a mystic-magical foundation concerning the third volume. Additionally, while Trithemius's steganographic methods can be established to be free of the need for angelic–astrological mediation, still left intact is an underlying theological motive for their contrivance. The preface to the Polygraphia equally establishes that the everyday practicability of cryptography was conceived by Trithemius as a "secular consequent of the ability of a soul specially empowered by God to reach, by magical means, from earth to Heaven". Robert Hooke suggested, in the chapter Of Dr. Dee's Book of Spirits, that John Dee made use of Trithemian steganography to conceal his communication with Queen Elizabeth I. Amongst the codes used in this book is the Ave Maria cipher, where each coded letter is replaced by a short sentence about Jesus in Latin. The reason for Polygraphia and Steganographia as covertexts being written are unknown. Possible explanations are that either its real target audience was the selected few such as Maximilian, or that Trithemius wanted to attract public attention to a tedious field. Works Exhortationes ad monachos, 1486 De institutione vitae sacerdotalis, 1486 De regimine claustralium, 1486 De visitatione monachorum, about 1490 Catalogus illustrium virorum Germaniae, 1491–1495 De laude scriptorum manualium, 1492 (printed 1494) Zum Lob der Schreiber; Freunde Mainfränkischer Kunst and Geschichte e. V., Würzburg 1973, (Latin/German) De viris illustribus ordinis sancti Benedicti, 1492 In laudem et commendatione Ruperti quondam abbatis Tuitiensis, 1492 De origine, progressu et laudibus ordinis fratrum Carmelitarum, 1492 Liber penthicus seu lugubris de statu et ruina ordinis monastici, 1493 De proprietate monachorum, before 1494 De vanitate et miseria humanae vitae, before 1494 Liber de scriptoribus ecclesiasticis, 1494 De laudibus sanctissimae matris Annae, 1494 De scriptoribus ecclesiasticis, 1494 Chronicon Hirsaugiense, 1495–1503 Chronicon Sponheimense, c. 1495-1509 - Chronik des Klosters Sponheim, 1024-1509; Eigenverlag Carl Velten, Bad Kreuznach 1969 (German) De cura pastorali, 1496 De duodecim excidiis oberservantiae regularis, 1496 De triplici regione claustralium et spirituali exercitio monachorum, 1497 Steganographia, c. 1499 Chronicon successionis ducum Bavariae et comitum Palatinorum, c. 1500-1506 Nepiachus, 1507 De septem secundeis id est intelligentiis sive spiritibus orbes post deum moventibus, c. 1508 (The Seven Secondary Intelligences, 1508), a history of the world based on astrology; Antipalus maleficiorum, 1508 Polygraphia, written 1508, published 1518 Annales Hirsaugienses, 1509–1514. The full title is Annales hirsaugiensis...complectens historiam Franciae et Germaniae,