COMMENTARY. We cannot afford room here to discuss fully the much agitated question respecting the ancient hermodactylus, and beg to refer to what we have said on the subject in the Appendix to Dunbar’s Lexicon. See also particularly the commentators on Mesue and Dioscorides. It is to be remarked that our author has entirely omitted to notice the Κολχικὸν of Dioscorides by name, and that the only article which he has in place of it is the Ἑρμ. This is a presumptive proof of the identity of these two medicines. Serapion moreover, in his chapter on Hermodactylus, gives the words of our author in this place along with Dioscorides’s account of the colchicum. Accordingly, Bergius, Tournefort, Humelbergius, and Geoffroy are decidedly of opinion that they were identical. Prosper Alpinus, in like manner, says of it “hermodactylus qui est radix colchici Græcorum.” (De Med. Meth. iii, 9.) See also Hill’s Mat. Med. On this side of the question we further beg to quote the authority of Dr. Paris: “The active ingredient of the _Eau médicinale_ has been discovered to be the _Colchicum Autumnale_ or meadow-saffron; upon investigating the properties of this medicine, it was observed that similar effects in the cure of the gout were ascribed to a certain plant called hermodactylus by Oribasius and Aëtius (Paulus _Æg._?), but more particularly by Alexander of Tralles, a physician of Asia Minor, in the fourth century; an inquiry was accordingly instituted after this unknown plant, and upon procuring a specimen of it from Constantinople it was actually found to be a species of colchicum.” (Pharmacologia, 58.) We have already given a full account of the administration of hermodactylus in gout. (Book III, 78.) Alexander of Tralles, as far as we know, is the earliest authority that treats of the hermodactylus by name, and he recommends it for the cure of arthritic diseases. (xi.) Our author is the only one of the Greek writers who admits it into the Materia Medica. The Arabians treat of it fully, but some of them confusedly, by mixing up the ancient descriptions of the _ephemeron_ and _colchicum_ with it. Thus Serapion, after quoting, as already stated, Dioscorides’s account of the _colchicum_, gives the opinions of various Arabian authorities, all of whom concur in representing it to be a calefacient herb, and most of them in recommending it in diseases of the joints. (De Simpl. 194.) Mesue recommends it as a phlegmagogue in diseases of the joints, when given internally with cumin, ginger, pepper, myrobalans, &c.; and externally in the form of a cataplasm. He also states it to be a good application to foul ulcers. (De Simpl. vii.) Avicenna quotes no Greek authority in his chapter on Hermodactylus but Paulus, from which it may be inferred that he did not identify it with the colchicum of Dioscorides, like Serapion. He recommends it especially in gout, both internally and in the form of plaster. (ii, 2, 343.) Rhases refers to no other Greek authorities on