We have elsewhere shown that the life of a post-office clerk is not passed upon a bed of roses, and we would here call his attention to the truth that many annoyances must be expected by him in the course of his experience. The ignorance and consequent pertinacity of those who apply for letters, frequently try his patience to the utmost. A person, for instance, anxiously expecting a letter, and not understanding that the mail by which it would come arrives only once a day, inquires at the office half a dozen times on the same day, and it is not very wonderful that the clerk in attendance should give short answers to the persevering applicant, or even omit to search for the letter. Yet, even in a case like this, much allowance should be made for the possible circumstances of the person in question. He may be waiting for news from a sick child, or for some other information of the utmost importance to him, and it is surely hard enough to be disappointed in such expectations, without being obliged to suffer the additional pain of a harsh response. Of course post-office clerks seldom know the peculiar circumstances of those who apply for letters; but the exercise of patience and mildness toward all, would be sure to spare the feelings of those who often rather need sympathy than rough words. Many who carry on little correspondence, and therefore have little occasion to be informed respecting post-office matters in general, often make blunders which are very annoying; but it is to be remembered that those in charge of the post-office, were employed for this, (among other things which contribute to the perfection of this branch of public service,) namely, to bear with all classes of correspondents, and to maintain a uniform courtesy toward every one. This would render it possible for even the most timid to approach the "delivery window," without experiencing the sensation of looking into a lion's den, as has sometimes (but I trust seldom) been the case. On the other hand, it is reasonable that those who avail themselves of the conveniences of the post-office, should take pains to inform themselves on those points which it is necessary they should know, in order to avoid giving inconvenience to themselves, and unnecessary trouble to those appointed to serve them. The times of opening and closing mails, and similar matters, should be known, that the post-office may not bear the blame due to negligence outside its walls. Cases now and then occur, similar to the following, which happened but a few years ago. A letter came into the Windsor, Vermont, post-office, containing a draft on the Suffolk Bank for three hundred dollars, and directed "Johnson Clark, Windsor, Ct." The "Ct.," however, was written so indistinctly as to resemble "Vt.;" and as there was a person by the name of Johnson Clark (as we shall call him) in the latter place, the letter was handed to him.