But to return. While some of the officers are attending in this way to the wants of the country, others are serving the interests of the town. A hundred or two gentlemen, bankers and manufacturers, pay an extra guinea yearly in order to secure certain special privileges at the Post-Office. These privileges consist, in brief, of having their letters arranged in private boxes, each labelled with their names, and delivered from these boxes by one of the clerks as soon as the office is opened, or the moment the letter-carriers emerge from it to enter upon any of the daily deliveries of letters. Of course these letters must be prepared previously. The office is open to the public for money-orders and for the transaction of the business of the new savings' banks at nine o'clock, and continues open on every day, except Saturdays, until six, on which day two hours longer are allowed. It is not necessary to describe the arrangements in these branches, seeing that the public are familiar from daily experience with them. It will suffice to say that separate clerks are usually delegated to these duties in our large towns, and are answerable to the postmaster for the correctness of their accounts. The same clerk attends to the sale of postage-stamps, keeping an account with the postmaster of the quantity _sold_, and also of the stamps _bought_ from the public under the recent arrangement. In larger towns where one clerk is specially retained for these duties, he is known as the "window clerk," as it devolves upon him to answer all applications and inquiries. Throughout the day, the quietness of the post-office proper is broken in upon and varied by the arrival of some small mail. On one of these occasions, namely, on the receipt of the day-mail from London, the operations of the morning are gone over again on a small scale, and for a short time the office presents an appearance of some of its early bustle. Letters are delivered in the town, but those arriving for the country places remain at the office till the next morning.