Under the desks or counters, which run from one end of the carriage to the other, bags are packed, to be given out as the train arrives at the respective stations. In less time, however, than it would take to read the foregoing, the mail has speeded miles away, and reached, by this time, the fox-covers and game-preserves of those Hertfordshire landowners who, when the railway was projected, expressed the wish that its concoctors "were at rest in Paradise!" The train possibly "thundered" through Camden Town as it used to do in olden times, but it would be but a momentary sensation, not to speak of the inhabitants being now quite accustomed to it. The post-office work commenced when the train left the station. The bags were quickly seized by the proper sorter, cut, and their contents turned out on the desk. Then he distributes what he finds in the bags according to a pre-arranged order. The registered letters which have found their way to the office he at once transfers to the clerk on duty whose special province it is to deal with them; the bundles of ordinary letters--in one of which packets is the identical letter we ourselves posted--he hands over to his fellow-sorters, who, each standing opposite to a distinct set of boxes, labelled with the names of different towns on the route, at once sort them away. The newspapers he deals with himself. The work thus started, the scene presently becomes one of considerable animation and a pleasant-enough sort of excitement, till every bundle of letters is cut open and disposed of in the boxes. There is then a lull, but it is only temporary. It is true that the train will not stop till the county of Warwickshire is reached; but the intervening country is provided for nevertheless--arrangements having been made that at all the towns we pass the exchange of letter-bags shall be effected by means of machinery whilst the train is progressing at its usual speed. The contrivance in question deserves minute description.[158] The machinery is not worked in the post-office, but in an adjoining van. By means, however, of a substantial iron gangway, the two carriages are connected, so that we can pass easily from one to the other and see the operation itself. As we do so we are evidently nearing some town, for the sorter is at that moment engaged in peering out of the window into the darkness in search of some familiar object, such as bridge, river, or cluster of trees, by means of which he is enabled to tell his whereabouts with almost mathematical precision. Whilst he is busy finding his position we will take the time to explain, that the machinery is arranged so as to secure, simultaneously in most cases, both the receipt and the despatch of bags. For the purpose of receiving bags, a large strong net is fixed to one side of the van, to be drawn down at the proper moment; and close to the door, on each side of it, securely fixed to the carriage, are hollow iron bars, inside each of