The Travelling Post-office apparatus is said to have been originally suggested by Mr Ramsay of the General Post-office; but his machinery was not very satisfactory when brought into practice. The idea was, however, improved upon by Mr Dicker, who was able to bring it into working condition; and for his services in this matter he was awarded a sum of £500 by the Lords of the Treasury, and the Postmaster-General conferred upon him an appointment as Supervisor of mail-bag apparatus. Some further improvements were carried out by Mr Pearson Hill, as, for example, the double arm, so that two pouches might be discharged at once from the same carriage-door. The apparatus first came to be used about thirty years ago, and there are now in the United Kingdom some 250 points or stations at which this magical game of give and take is carried on daily, and in many cases several times a day. At certain places not merely one or two pouches are discharged at a time, but a running fire is sometimes kept up to the extent of nine discharges of pouches. By the limited mail proceeding to the North, nine pouches are discharged at Oxenholme from the three Post-office carriages, the method followed being this:--Two pouches are suspended from the arms at each carriage-door, and upon these being discharged, three of the arms are immediately reloaded, when the pouches are caught by a second set of roadside nets, distant only about 600 yards from the first. It is necessary that great care should be taken in adjusting the nets, arms, and roadside standards to their proper positions in relation to one another, for any departure from such adjustment sometimes leads to accident. The pouches occasionally are sent bounding over hedges, over the carriages, or under the carriage-wheels, where they and their contents get cut to pieces. Pouches have been found at the end of a journey on the carriage-roof, or hanging on to a buffer. In November last, a pouch containing several mail-bags was discharged from the Midland Travelling Post-office at Cudworth, near Barnsley; but something going wrong, the pouch got cut up, and the contents were strewn along the line as far as Normanton. Some of these were found to be cheques, a silver watch, a set of artificial teeth, &c. The following is a list of the Travelling Post-offices in the United Kingdom, most of which travel by night, distributing their freight of intellectual produce through all parts of the country:--