The collyrium _Anicetum_, or Ανικητον, is, as far as I know, described by Oribasius alone. It was composed of red copper, combined with henbane, hemlock, spikenard, frankincense, etc. Oribasius enters it as a collyrium “ad carbunculos aptum.”[555] Mr. Roach Smith supposes that the collyrium _Anicetum_ of this stamp derives its name from being a preparation containing aniseed. But the formula given by Oribasius does not present this ingredient; and the origin of the term is, we believe, very different. Galen presents us with a clue to its true meaning, when discussing the subject of plasters, in the sixth book of his work, _De Compositione Medicamentorum_. One, bearing the name of ANICETUM, is (he observes) called so in consequence of its many and wonderful effects (vocatum est insuperabilis (ΑΝΙΚΗΤΟΝ) propter miranda et multa ipsius opera).[556] The term itself is, no doubt, derived from the Greek participle νικητος “conquered,” with the prefix of the privative α. Among his own list of collyria, Galen enters the one known in his time under the name of Collyrium Aster,[557] as unsurpassed (Αστερ Ανικητον[558]). 2. T. VINDAC.—ARIOVISTI NARDINUM.—_T. Vindacius Ariovistus’ Nardinum_ or _Spikenard Collyrium_. The ancient authorities on the Materia Medica describe several kinds of spikenard, according to the localities in which it is procured, as the Indian, Syrian, Celtic, etc. It was used by the Romans in many of their ointments and perfumes,[559] and sometimes added to their wines.[560] The nard, or spikenard, was used principally to perfume various medicines, etc. But high medicinal properties were also attributed to it in various diseases, and, amongst others, in diseases of the eye. (See Dioscorides, lib. i. cap. vi.) It entered into the composition of many of the ancient collyria, and several were named from it in consequence of its forming their leading ingredient. Aetius has a long chapter on formulæ for “Collyria Nardina et Theodotia,”[561] and bestows the most extravagant praises upon some varieties of the spikenard eye-applications. Speaking of one of them, he observes, “It is not easy to relate the powers and efficiency of this medicine; indeed my readers would scarcely credit it, for under the most desperate affections it recalls the eye to its natural state.”[562] 3. T. VINDAC. ARIOVISTI CHLORON.—_The Chloron_ or _green Collyrium of T. Vindax Ariovistus_. Already I have had occasion to allude to the collyrium _Chloron_, as one of those which derive their particular appellation from the tint or colour of the preparation. The green collyrium, or _Chloron_, is mentioned in many of the old treatises upon affections of the eye. For example, Galen gives several such collyria in succession, as, vol. xii. pp. 763 and 768, the “_Chloron_ ad diatheses;” and again, two forms of _Chloron_ used by Zoilus the oculist. 4. T. VINDAC. ARIOVISTI _Tu_RINUM. _The Frankincense Collyrium of T. Vindacius Ariovistus._