No doubt the post-office system of this country, despite occasional lapses, is as nearly perfect as any human institution, in the present state of society, can be reasonably expected to be. But it is equally certain that in so far as postal communication is required at all in the new age it will have to be vastly improved both as to speed and precision, compared with what we now, sometimes rather thanklessly, enjoy. For instance, that impatient age will certainly not tolerate the inconvenience of having to send out to post its letters and parcels, or the tardiness of having these articles sorted and passed on for delivery only at intervals of half an hour or so. We may take it for granted that every well-equipped business office will be in direct communication, by means of large-calibred pneumatic tubes, with the nearest post-office. And however rapidly and however frequently the trains or airships of the period may travel, the process of making up van loads of mail matter for despatch to remote centres, and redistribution there, is far too clumsy for what commerce will demand a hundred years hence. No doubt the soil of every civilised country will be permeated by vast networks of pneumatic tubes: and all letters and parcels will be thus distributed at a speed hardly credible to-day. Already every bank of any importance probably uses calculating machines. It is not likely that the fatiguing and uncertain process of having arithmetical calculations of any sort performed in the brains of clerks will survive the improvements of which these machines are capable. Account books, invoices, and all similar documents will doubtless be written by a convenient and compendious form of combined calculating machine and typewriter, which we may suppose to be called the numeroscriptor. It will, of course, be capable of writing anywhere--on a book or on a loose sheet, on a flat surface or on an irregular one. It will make any kind of calculation required. Even such operations as the weighing and measurement of goods will all be done by automatic machinery, [4] capable of recording without any possibility of error the quantity and values of goods submitted to its operation. Naturally transport will be the subject of something like a renascence. So far as inland communication goes, the chief difficulties to be overcome already call loudly for amendment. We cannot for more than a decade or so make do with the present railway tracks, and either (as already hinted) by means of some invention to enable trains to run one above another, or by some entirely new carrying device such as I will now try to suggest, the new age will certainly supersede or supplement the transport of to-day.