may be used only when the relationship between the two people concerned is unconventional or unusually friendly and familiar. In such cases the writer may close in any way that seems to him fitting. To close a letter in these days with "Your friend" is not considered quite good form, though there is no reason that any intelligent person can give why it should not be so. Everything that has been previously said concerning sentence structure, paragraphing, good grammar, abbreviations, and similar details holds for the friendly letter. There is as much reason why we should be careful of form and detail in writing to our friends as in writing to anyone else in the world, just as a proper husband feels under obligations to show his wife the same courtesy and thoughtfulness as he accords to other women. One should not neglect to show a man consideration and courtesy just because he is one's friend.
The purpose of friendly letters is to interest our friends, to keep in touch with them, and to keep alive the warm feelings which first awakened the friendship. To accomplish this we must tell them what
