To the Editor of The New York Times: I object to the suggestion of Mr. Ellis Parker Butler in Friday's Times that the most appropriate word descriptive of a telephone message is "yawp." Being somewhat of a yawpist myself and knowing something about yawps, I want to say that a yawp is as unlike a telephone message as -- as -- well, as a telephone message is unlike a yawp. Oh, say, A yawp is not the way We send A telephone message to a friend, Because a yawp gets there For fair; Which is why It is called a yawp. See? Judging from numerous transactions I have had with telephonic messages I should say a good descriptive word would be "tohelephon." What?