For heavy parcels a uniform rate cannot be justified. There are, however, certain considerations not purely economic which may be held to justify a uniform rate for small parcels, especially if it be held that the State may conduct such a business for the advantage of the public, and abandon to some extent ordinary commercial balancing of cost and revenue.
Simplicity, afforded in a high degree by the uniform rate, facilitates the administration and practical conduct of Post Office business, and is, therefore, desirable, even if a little unjust. Complicated rates are an unfailing source of irritation to the public as well as a source of embarrassment to the staff, and there is not much doubt that one feature of the parcel post which commends it to the public favour is the simplicity of its rates.[649] There is, moreover, to be considered the view that it is no part of the duty of the Post Office to provide services in towns or districts for which private industry gives adequate services, but rather to cover the whole country, so that the public may always have ready to hand a means of forwarding small packages of goods to friends or relatives, or traders to customers, in other parts of the country. Such a service has many features which distinguish it from business undertakings of the ordinary type. In this way uniform rates may prove justified; since if in regard to any local service, or the service between any two points, the uniform rate, which must necessarily in certain cases yield considerable profit, is found burdensome, it is in all such cases open to private industry to provide the remedy. In the case of light parcels the cost of the services of collection
and delivery is much greater than that of conveyance; and the variation of the total cost with distance of transmission is small proportionately. The uniform rate can therefore be fixed near the level of the cost. But even for such parcels it is economically unsound. It cannot be fixed at a really low level, because it is to be applicable to a parcel sent across the whole territory of a postal administration; and with such a parcel, even if weighing only 1 pound, the cost of transportation is an appreciable item.
The uniform rate for parcels is an expedient for smooth working rather than a scientific rate, and against the acceptance of uniformity of rate as a principle must be placed the fact that railway companies have not adopted it. The actual results of the uniform rate have not been altogether satisfactory. The small use of the post for the transmission of the heavier parcels appears to indicate that the rate for such parcels is, in general, too high.[650] For local traffic in small towns, where cost of conveyance is negligible, it is almost prohibitive,[651] and is much higher than the rates charged by competing agencies.
The considerations in favour of a degressive rate apply with greater force to parcels of moderate weight than to the comparatively light packets which pass at the letter rate, and this feature should receive fuller recognition in the determination of parcel rates than has hitherto been the case.
To sum up: there are important differences between the letter and parcel traffic: (1) the letter traffic is a monopoly in which the more profitable business belongs to the State as well as the unprofitable, while the parcel business is not a monopoly, and any traffic which proves profitable may at once attract private competition; (2) in the letter traffic the cost of transmission for a given distance is negligible, and in the parcel traffic it is important; (3) the social arguments
which make it desirable for the State to secure as wide as possible a diffusion of letters containing information, of newspapers, books, and samples, do not apply in the same way, or to the same degree, to the traffic in parcels containing goods.
In essentials the case of international rates differs little from that of inland rates. The work in connection with a letter falls into three main divisions: (1) at the place of posting; (2) transmission from place of posting to place of delivery; and (3) at the place of delivery. In the case of inland letters, the first and third factors preponderate to such a degree that their cost alone need be taken into consideration in fixing the rate. The factor of transmission can be ignored. In the case of letters from one country to another, the services at the offices of posting and delivery are performed under different, instead of under the same, administrations, but for all practical purposes are otherwise unaffected. The only factor seriously affected is that of transportation.
The variation in the cost for transportation[652] depends largely on distance, and in that respect various countries are affected in varying degrees, not only as regards the actual distances over which their letters for or from places abroad are sent, but in the way in which those distances compare with the distances over which letters in the inland service are conveyed; and the question therefore wears a different aspect in the different countries. Thus a very large proportion of letters in the British service are forwarded over greater distances than letters in the inland service. The same thing is probably true of France and Germany. Distances in the inland services of the United States and Canada are, however, comparable with the distances in the international services in Europe, and in many cases with distances in their own international services. If, therefore, mere distance of transmission were the only consideration, there would obviously be little to urge against the application