[ 59 + ] 
the fubjedt of them and thofe of my former letters, 
which the Society have done me the honour to pub- 
lifh in the laft volume of the Philofophical Tranf- 
aftions, fcems to render every thing of that kind 
altogether unneceftary. 
i. That the medal here defcribed ought to be 
ranked amongft the Parthian coins, is abundantly 
clear from a bare inlpedtion of the draughts of feve- 
ral of thofe ( i) coins. And that it was ftruck in the 
reign of Vologefes III. we may conclude at leaft ex- 
tremely probable, from two fimilar Parthian coins, 
exhibiting the head of the fame prince. One of 
thefe, which belongs to His Grace the Duke of De~ 
vonfhire, has preferved on the reverfe the fol- 
lowing words, or rather parts of words(2), . . . . 
6ACIAE ArACOT .... EniSANOTC 
. . . . IAEAAHNOC, together with the three Greek 
numeral letters AHT > and the other, now in the pof- 
feftionof theUniverfnyof Oxford, the very inftrument, 
or machine, that occurs on the medal I am here endea- 
vouring to explain, and a legend, confiding of ftrange 
characters, l'o injured by time as to be rendered there- 
by abfolutely illegible. The Greek numerals AHT 
indicate the piece, on which they appear, and not 
improbably that likewife now before me, as well as 
the other in the Bodleian cabinet, to have been coined 
in the 46 1 ft year of the Parthian a3ra, generally term- 
(1) J. Foy Vail!, in Arfacid. Jmper. p. 364, 366. Pari- 
fiis, 1728. Numifm. Ant'iqu. collect. a Thom. Pembroch. et 
Mentis Gomer. Com. P. 2. T. 76. 
(2) Nicol. Fran. Haym Roman. Del Tejur . Britan . Vol. Se- 
cond. p. 37. In Londra, 1720. 
ed 
