I have also formerly shown that the Greek term Διαθεσις was used as a general term for eye-disease (see p. 241); and no doubt its initial letter Δ stands in the present inscription under this signification. Many of the ancient collyria were, like the _Dialibanum_, preserved and sold in a firm or solid form, and were directed to be dissolved or mixed with the white of one or more eggs at the time when they were required for application to the eye.[554] Hence the expression, UNO “EX OVO,” in this and other stamp legends. This stamp, like some others, has a rude figure of a plant engraved along with the inscription. The trunk of the plant is given at the commencement of the third line by Mr. Hartshorne as an I—thus unnecessarily confusing the reading of the legend. SECTION XI. STAMP NO. X.—FOUND AT KENCHESTER. In the Journal of the British Archæological Association for 1849, Mr. Roach Smith has described a medicine-stamp found at Kenchester, in Herefordshire, and communicated to him by Mr. Johnson. I myself am indebted to the kindness of Mr. Johnson for both a model and drawings of this medicine-stamp, which is quadrilateral, and engraved on its four sides. It has, besides, the word SENIOR inscribed on one of its flat surfaces; and the four first letters of the same word are repeated on the opposite surface. I shall afterwards have occasion to re-advert to this curious point. Mr. Smith has published a sketch of the stamp; but the more correct drawings of it in Plate III., No. X., have been kindly furnished to me by Mr. Johnson. The six lowest figures in this plate represent, first, the two flat surfaces of the stone, with the retrograde inscriptions upon its four sides; and, secondly, these four inscriptions as they appear when impressed upon wax. The inscriptions on the four sides of this stamp read as follows:— 1. F.VINDAC.ARIO VISTIANICET 2. T.VINDACIAR (_i_)OVISTINARD 3. (T) VINDAC. ARI OVISTI CHLORON 4. T. VINDAC . ARIO VISTI ... RINM The name of the oculist or proprietor, T. VINDAC ARIOVISTUS, _Titus (?) Vindacius_ or _Vindex Ariovistus_, is singular; the name ARIOVISTUS being the same as that of the celebrated German king and general that plays so interesting and important a part in the Commentaries of Cæsar, and the reputed valour and prowess of whose troops daunted for a time, and almost created a mutiny in, Cæsar’s army. On this stamp there are no names of any specific eye-diseases given; but the four sides contain the designation of four collyria that we have not met with on any of the previous medicine-stamps which we have had occasion to describe. These are the collyria _Anicetum_, _Nardinum_, _Chloron_, and _Thurinum_. 1. T. VINDAC_ii_ ARIOVISTI ANICETUM.—_The Anicetum_ or _infallible Collyrium of T. Vindacius Ariovistus_.