Bk. xxi, ch. i, sec. 7. “Et quoniam erudito et studioso cognitionum omnium principi malivoli praenoscendi futura pravas artes adsignant, advertendum est breviter unde sapienti viro hoc quoque accidere poterit doctrinae genus haud leve. Elementorum omnium spiritus, utpote perennium corporum praesentendi motu semper et ubique vigens ex his quae per disciplinas varias affectamus, participat nobiscum munera divinandi; et substantiales potestates ritu diverso placatae, velut ex perpetuis fontium venis vaticina mortalitati subpeditant verba.” Footnote 224: Bk. xxi, ch. i, sec. 13. Footnote 225: Bk. xxi, ch. i, sec. 14. “Unde praeclare hoc quoque ut alia Tullius ‘signa ostenduntur’ ait ‘a dis rerum futurarum.’” “Dis” seem to be practically identical in Ammianus’s mind with natural forces. Footnote 226: Περὶ ἐνυπνίων. (_On Dreams_) ch. 2. _Synesii Cyrenâei Quae Extant Opera Omnia._ Io. Georgius Krabinger. Landishuti, MDCCCL. Tomus I. All following references to and quotations from the works of Synesius apply to this edition. There is a French translation with several introductory essays by H. Druon, Paris, 1878. For an account in English of Synesius and his writings see W. S. Crawford, _Synesius the Hellene_, London, 1901. See also, H. O. Taylor, _Classical Heritage of the Middle Ages_, pp. 78–82, New York, 1901. This interesting work gives illustrations in various fields of the continuity of culture during the transition from Roman times to the Middle Ages. Footnote 227: Περὶ ἐνυπνίων (_On Dreams_) ch. 3. Ἔδει γαρ, οἶμαι, τοῦπαντὸς τούτου συμπαθοῦς τε ὄντος καὶ σύμπνου τὰ μέρη προσήκειν άλλήλοις, ἅτε ἑνὸς ὅλου τὰ μέλη τυγχάνοντα. Καὶ μή ποτε αἱ μάγων ἵυγγες αὖται· καὶ γὰρ θέλγεται παρ άλλήλων, ὢσπερ σημαίνεται· καὶ σοφὸς ὁ εἰδὼς τὴν τῶν μερῶν τοῦ κόσμου συγγένειαν. Ἔλκει γὰρ ἄλλο δἰ ἄλλου, ἔχων ἐνέχυρα παρόντα τῶν πλεῖστον ἀπόντων, καὶ φωνὰς, καὶ ὔλας καὶ σχήματα.... Evidently Synesius did not regard the magi as mere imposters. Footnote 228: Περὶ ἐνυπνίων, ch. 3. Καὶ δὴ καὶ θεῷ τινὶ τῶν εἴσω τοῦ κόσμου λίθος ἐνθένδε καὶ βοτάνη προσήκει, οἴς ὁμοιοπαθῶν εἴκει τῇ φύσει καὶ γοητεύεται. In his _Praise of Baldness_ (Φαλάκρας ἐγκώμιον), ch. 10, Synesius tells how the Egyptians attract demons by magic influences. Footnote 229: Περι ἐνυπνίων, ch. 1. Αὐται μὲν ἀποδείξεις ἔστων τοῦ μαντείαν ἐν τοῖς ἀρίστοις εἶναι τῶν ἐπιτηδευομένων ἀνθρώποις. Footnote 230: _Ibid._, ch. 18. Footnote 231: Φαλάκρας ἐγκώμιον, ch. 10. Footnote 232: Αἰγύπτιοι ἤ περὶ προνοίας, bk. ii, ch. 7. Footnote 233: Πρὸς παιόνιον περί τοῦ δώρον, ch. 5. Footnote 234: Δίων, ch. 7. Περι ἑνυπνίων, ch. 4. Ἐπιστολαί, 4 and 49. Footnote 235: