In cases where there are four or five such divisions of the packets, the separation is likewise made from considerations independent of the rates of postage, although it happens that, as a rule, a large proportion of the packets posted under a given rate fall into a certain group. Thus all postcards fall to be handled with the short letters; all newspapers fall to be handled with the heavier packets sent at the letter rate; and a large proportion of the halfpenny packets, viz. the short halfpenny packets, fall to be handled with the short letters. There are in general three methods of handling. The sorting is done either at the ordinary open frames, or at the newspaper frames, or directly into the mail-bags, the two latter methods being alternative. Short letters are dealt with at the ordinary sorting frames. Long letters (which include a large proportion of "circulars") are dealt with in some cases at the ordinary frames, and in some cases at the frames provided for the larger packets (the "newspaper" frames). All other packets are dealt with at the newspaper frames, or are sorted directly into the mail-bags in those cases where frames for hanging the bags are provided. Stamping is performed either by hand or by machine. When first brought into the sorting office the packets are placed on an open table, and the ordinary letters, circular letters, and postcards are arranged in order with the addresses in the same direction, or, as it is termed, "faced." Simultaneously, all other packets are picked out for treatment separately. The postage labels affixed to the letters and other packets are then obliterated with a dated stamp. After stamping, the letters and packers are taken to the respective sorting tables, where they are separated (in one or more operations) into groups corresponding to the various towns to which they will be despatched. Before enclosure in the mail-bags, all short letters, postcards, and short halfpenny packets, and some of the long letters, are tied in bundles, other packets being sent loose. From the first office of destination many of the packets are sent forward to another office, since it is naturally not possible always to enclose a packet in a direct mail-bag for the town to which it is addressed. These packets are resorted and despatched. The letters, etc., for immediate delivery do not require to be faced, as they are received in bundles, in which they are arranged with the addresses in the same direction. But, except when received for the first morning delivery, letters are stamped to show the date and time of receipt, after which they are sorted in the order of delivery, and delivered by the postmen.