[780] Thus in _Auriferae artis quam chemiam vocant antiquissimi authores_, Basel, 1572, pp. 387-99, a treatise which cites Morienus, Rasis, and Avicenna is printed as _Tractatulus Aristotelis de Practica lapidis philosophici_. Apparently the only reason for ascribing it to Aristotle is that it cites “the philosopher” in its opening sentence, “Cum omne corpus secundum philosophum aut est elementum aut ab elementis generatum.” [781] Laud. Misc. 708, 15th century, fol. 54. [782] Berthelot (1893), I, 105 and 107. [783] Ashmole 1448, 15th century, p. 123. [784] Ashmole 1450, 15th century, fol. 8, “Epistola ad Alexandrum. O Alexander rector hominum ... / ... et audientes non intelligant.” Harleian 3703, 14th century, fols. 41r-42r, Aristoteles ad alexandrum. “In primo o elaxandor tradere tibi volo secretorum maximum secretum ...,” is a similar treatise. [785] Ashmole 1384, mid 14th century, fols. 91v-93r, “Incipit Epistola Alexandri. Dicunt philosophi quod ars dirivata sit ex creatione hominis cui omnia insunt ... / ... ex omni specie et colore nomine. Explicit epistola Alexandri.” In the text itself, which is written in the manner of a master to a disciple, there is nothing to show that the work is by Alexander rather than Aristotle. The following is apparently the same treatise but the closing words are different. Riccard. 1165, 15th century, fols. 161-3, Liber Alexandri in scientia secretorum nature. “Dicitur quod hec ars derivata sit ex creacione hominis cui omnia insunt ... / ... et deo annuente ad optatum finem pervenies.” The next would seem to be another treatise than the foregoing. Arezzo 232, 15th century, fols. 1-14, “Liber transmissus ab Alexandro rege ex libro Hermogenis.” Hermogenes, who is cited on the subject of the philosopher’s stone in at least one MS of the _Secret of Secrets_ (Bodleian 67, fol. 33v, “Et pater noster Hermogenes qui triplex est in philosophia optime philosophando dixit”), is apparently none other than Hermes Trismegistus. He is also mentioned in a brief work of Aristotle to Alexander; Harleian 3703, 14th century, fols. 41r-42r, “... hermogenes quod (_sic_) egypti multum commendunt et laudant et sibi attribuant omnem scientiam secretam et celerem (?).” The use of the reflexive pronoun in this sentence to refer to Hermogenes I would have the reader note, as it appears to illustrate a fairly common medieval usage which has or will lead me to alter the translations which have been proposed for certain other passages. [786] II, 9. [787] _Excursions historiques_, etc., p. 562. [788] I have read it in an incunabulum edition numbered IA.49867 in the British Museum.