Against these arguments it was contended that the educational benefits derived from the extensive circulation of second-class matter are very great, and that for this reason the government can well afford to contribute something toward the dissemination of advertising information among the masses of the people. Moreover, it was argued that the circulation of second-class matter is responsible for a large amount of first-class matter and thus the government makes up in the increased profits on first-class matter what it loses on second-class matter. Thus it was said that fifty pages of advertising matter in a popular magazine might lead to the writing of 50,000 letters. Consequently a reduction in the volume of second-class matter would inevitably be followed by a corresponding reduction in first-class matter. Finally in 1917 Congress passed a law providing for a graduated increase in the rates on the advertising portions of newspapers and magazines, the amount depending on the distance carried. =Free Delivery Service.=--The extension of _rural free delivery_ service has been the most rapid and remarkable of all the undertakings of the post office department. It began as an experiment in 1897, when less than $15,000 was appropriated to test the advantage of free delivery in country districts, and it has been extended until it now constitutes one of the largest branches of the postal service, the annual expenditures on account of the service exceeding $50,000,000. This is the largest item of expenditure by the post office department on any of its services except the transportation of mail on the railroads, which foots up nearly $55,000,000. There are more than 40,000 rural free delivery routes in operation, and nearly three billion pieces of mail are annually delivered to 27,000,000 people along these routes. An investigation made in 1909 showed that the postage on the average amount of mail collected on a rural route was $14.92 per month, while the average cost of the service was $72.17. The average cost of the service on a rural route, therefore, exceeded the average revenue derived from postage by $687 per year. On that basis the total loss on the operation of the service was estimated to be about $28,000,000. But while the loss to the government in money has been great, the advantage to the country districts served has been notable. Besides the convenience to the country residents it has brought them into closer relation with the centers of population, made country life more attractive and less monotonous, increased farm values, and encouraged the improvement of country roads, since the department insists upon the maintenance of the highways in good condition as a prerequisite to the introduction and continuance of the service.