The New art of letter-writing : divided into two parts : the first containing rules and directions for writing letters on all sorts of subjects, with a variety of examples equally elegant and instructive : the second, a collection of letters on the most interesting occasions in life, wherein are inserted the proper method of addressing persons of all ranks, some necessary orthographical directions, the forms of messages for cards, and thoughts upon a diversity of subjects : the whole composed on a plan intirely new ... /