There is a marble plaque within Perth Sheriff Court with the inscription " To Patrick Murray Sheriff Clerk of Perth Shire This Marble was erected By the County As a Monument of Public Refpect for the eminent Abilities,Integrity, Diligence and Difintereftednefs With which During the Courfe of 30 Years He Difcharged The Duties of his Office He was born Auguft 2 1728 and died September 5 1781" Why are some s replaced by f and some not. Are there any rules for this kind of substitution?
it's not an f, it's a 'long s' - it either won't have the crossbar like an f at all, or it'll have a shorter one. It's pronounced as an s. Rules as shown by TCL in his post.