Note 2474 — Chapter LXV

Both copies of this work of which I know seem to be fragmentary. Amplon. Quarto 361, English cursive hand of early 14th century, fol. 24, I have not seen, and follow the description of it by V. Rose in his “Ptolemaeus und die Schule von Toledo,” Hermes, VIII, 338-40, which is fuller than the notice in Schum. Rose knew of no other MS of the treatise, but I have examined it in the following: Digby 67, 15th century, fol. 32.

Both MSS have the same prologue by Ferrarius, in which the number of experiments is stated as eighty-eight, and both open with the same experiment. Rose gives the headings of only fourteen others, and then begins the Book of Fires of Marcus Grecus, “Nunc incipiet liber ignium a marcho greco descriptus,” which, as Rose says, follows the same form of a series of experiments as the preceding Rasis. Indeed, in Digby 67 the experiments of both treatises are numbered continuously in the margin. The Rasis seems to end with the experiment numbered 33, a circumstance which led Macray to describe it as containing 33 instead of 88 experiments. Digby 67, however, does not at present contain experiments 1-33 inclusive, but only 1-5 and 27-33; apparently a sheet is missing. The Liber ignium, beginning at experiment 34 and at the same juncture as in the Amplon. MS, since the preceding experiments in both cases were concerned with alcohol (aqua ardens), turpentine, and Greek fire, comprises twenty-five experiments, after which miscellaneous experiments carry the total number recorded in the margin up to one hundred and forty-four. In the Amplon. MS the Liber ignium is followed by another experimental treatise entitled Secreta philosophorum, of which more will be said presently.