A bust of Garrick circled with a laurel wreath stands on a plinth with the inscription. On either side stand two Muses, helpfully labeled. Less helpfully for today's Londoners, the labels are in Greek, but one of the advantages of a scientific education is a working knowledge of the Greek alphabet so I was able after only a bit of head-scratching to identify them as Melpomene (left) and Thalia (right).
Melpomene, the Muse of Tragedy, holds her dagger in her right hand. She traditionally also carries a club but Fehr clearly thought that would be rather unladylike so she holds a slim, elegant mace with a crown hanging round it instead.
Thalia holds the mask of comedy and a shepherdess's crook. Both are sad and pensive