The following treatises, also ascribed to Aristotle, I have not examined: Sloane 2459, 15th century, fols. 9v-16, _de proprietatibus herbarum et lapidum_; Vienna 2301, 15th century, fols. 81-2, “Isti sunt lapides quorum virtutes misit Aristotiles in scriptis maximo imperatori Alexandro.” Perhaps the last may have reference to philosopher’s stones, like the similar treatise of Aristotle to Alexander noted above in our discussion of the pseudo-Aristotelian alchemical treatises. [822] See above chapter 21, I, 496. [823] _De causis elementorum, etc.,_ II, ii. 1 (Borgnet, IX 643). [824] HL XXV, 65. [825] _De venenis_, cap. 5, probably written in 1316, but see chapter 70, appendix vi. [826] Aristotle, _Lapidarius et Liber de physionomia_, Merseburg, 1473, p. 8. [827] _De naturis rerum_, II, 21. In an illustrated 13th century MS of the vernacular Romance of Alexander three pictures are devoted to his submarine. CU Trinity 1446, 1250 A. D., fol. 27r, “_Coment Alisandre vesqui suz les ewes_; a covered ship with windows under green water, Alexander and three men in it; fol. 27v, _Des nefs ke sont apelees colifas_; a similar ship in the water, no one visible in it; _Coment Alisandre encercha la nature de pessons_; Alexander and two men in the ship, fish and mermaid below.” I have quoted James’ description of the MS (III, 488). See also Lacroix, _Science and Literature in the Middle Ages_, 1878, Fig. 87, p. 119, for Alexander descending to the bottom of the sea in a glass cask, from a thirteenth century MS, Brussels 11040. [828] See chapter 61, pp. 654-5. [829] Budge, _Egyptian Magic_, 1899, pp. 152-6; Masʿudi, _Les Prairies d’Or._ ed. B. de Maynard and Pavet de Courteille, 1861, II, 425ff. [830] Budge (1899), pp. 95-6. [831] CLM 2574b, bombyc. 13th century, fol. 69v. Although Steele (1920) p. lviii, says, “No Latin manuscript is known in which there is a figure of the horn, with the exception of that in Holkam Hall, in the borders of which an entirely fanciful instrument is depicted (reproduced in plate 151 of the Roxburghe Club publication of 1914). There are drawings in MSS C and D of the Eastern Arabic text, of entirely different shape.” [832] Steele (1920), p. 151. [833] Cap. 5.