The _modus operandi_ of this scheme is as simple as it is satisfactory. On making the first deposit, under the new arrangements, an account-book is presented to the depositor, in which is entered his name, address, and occupation. All the necessary printed regulations are given in this book. The amount of each deposit is inserted by the postmaster, and an impression of the dated stamp of the post-office is placed opposite the entry, thus making each transaction strictly official. At the close of each day's business, the postmaster must furnish to the Postmaster-General in London a full account of all the deposits that have been made in his office. By return of post an acknowledgment will be received by each depositor in the shape of a separate letter from the head office, the Postmaster-General thus becoming responsible for the amount. If such a letter does not arrive within ten days from the date of the deposit an inquiry is instituted, and the error rectified. An arrangement like the foregoing shows the boundless resources which the Government possesses in its Post-Office. The acknowledgment of every separate transaction in each of the money-order offices of the three kingdoms, which in any private undertaking would be an herculean labour, involving an enormous outlay in postage alone, is here accomplished with marvellous ease, and the whole mass of extra communications make but an imperceptible ripple on the stream of the nation's letters flowing nightly from St. Martin's-le-Grand.