If doubtful whether to end with 'yours faithfully', or 'yours truly', or 'yours most truly', &c. (there are at least a dozen varieties, before you reach 'yours affectionately'), refer to your correspondent's last letter, and make your winding-up at least as friendly as his: in fact, even if a shade more friendly, it will do no harm!

A Postscript is a very useful invention: but it is not meant (as so many ladies suppose) to contain the real gist of the letter: it serves rather to throw into the shade any little matter we do not wish to make a fuss about. For example, your friend had promised to execute a commission for you in town, but forgot it, thereby putting you to