The newspaper rate involves some new considerations. The original aim of the posts was the distribution of a certain form of intelligence. They had by the seventeenth century developed into an instrument whose main function was the distribution of letters. The first postal traffic in packets which were not letters was that in newspapers. The early newspapers were, however, in fact as well as in some cases in name also, merely news "letters," and it would have been surprising, therefore, had the posts not been made use of for their distribution. For newspapers, however, the charges have from the first been of a fundamentally different character from those for letters, and the traffic in newspapers, so far from being a source of profit, has in general resulted in heavy loss. There are certain general considerations which render the application of the rates of postage charged on letters inappropriate. The bulk and weight of a single newspaper is usually much greater than the bulk of a single letter; and if the newspaper were charged at the same rate and on the same basis as the letter, viz. by weight, it must in general be charged several times the rate for an ordinary letter. Such a charge would be unjust, because, as already pointed out, the cost of performing the services of transportation and delivery does not increase in direct proportion, or anything approaching direct proportion, to the increase of weight. If a newspaper is regarded as a very heavy letter, the importance of the factor of weight is at once perceived. Weight charges levied on newspapers should at least be on a degressive scale. But any system of charge by weight proportioned to letter postage must lead to a higher charge than that for a single letter. How much higher is of little consequence, because even the rate for single letters would be almost prohibitive for ordinary newspapers. The papers would either be excluded from the mails and despatched by private agencies, where such agencies exist, or, in countries where the Post
Office holds the monopoly of the carriage of newspapers, the traffic would be greatly restricted.
A lower rate for newspapers is also justified on the principle of charging "what the traffic will bear." But the chief reason is that it has usually been considered desirable to encourage the distribution of newspapers for the benefit of the public; and in its origin, the special rate for newspapers seems to rest rather on the two general considerations of the expediency of providing for the easy distribution of intelligence, and the impossibility of charging newspapers with the same rate as letters.
Merchants' and manufacturers' samples are not, of course, strictly speaking, of the nature of correspondence, and their conveyance by post represents in some aspects an expansion of function. The main function of the Post Office is the distribution of letters, or, as it may be expressed generally, the distribution of any species of communication between persons, reduced to material form, whether as manuscript letters, postcards or circular letters, printed or written, or even in the form of newspapers. For samples of merchandise some relationship to ordinary communications may perhaps be claimed. They are themselves often the necessary complement of letters of business and are forwarded in order to convey a precise notion of the commodities with which the business is concerned, a purpose served much more effectively by the small sample than by the descriptive letter, which would be the only alternative. So far, then, as the Post Office is intended to assist the transmission of information of whatever sort, the carriage of merchants' samples is perhaps a legitimate part of its function, especially as the encouragement of trade is no small part of its main function. The transmission of small packets not inconvenient to handle and transport, although essentially different in make-up from letters, was therefore a natural development when advantage to commerce would result.
The impracticability of charging the ordinary letter rate, since such a charge would have been prohibitory, which has influenced the newspaper rate, is equally applicable to samples. The case for a lower rate was strengthened by
the consideration that commerce would benefit, and the general considerations of the justice of a lower weight-rate for moderately heavy packets and for packets of less intrinsic value, applied to sample packets, no less than to newspapers, although this point of view was not perhaps consciously adopted. Based on these considerations, a special rate was given to samples, fixed more or less arbitrarily, and without examination into the question of what rate would be the lowest profitable rate for the business.
The basis of the book rate is only to a slight degree economic, that is to say, related to the cost of providing the service. The justification for a low rate rests for the most part on the same considerations as the privileged rate for newspapers: the desirability of assisting the education of the people and the utility of books for the purpose, the comparatively low intrinsic value, and the impossibility of charging the scale of rates applied to letters—even less possible in the case of books than in the case of newspapers.