Undoubtedly there are many contributing causes which have made the periodical industry grow faster than all other industries of the country. I shall mention only six.

First. The cheapening of the postal, telephone, and telegraph rates, and the introduction of such conveniences as the rural free delivery, so that news and general information can be collected and distributed cheaply and with dispatch.

Second. The introduction of the linotype machines, rapid and multiple presses, and other mechanical devices, which vastly increase the output of every shop that adopts them.

Third. The photo-process of illustrating, which threatens to make wood- and steel-engraving a lost art, and which, on account of its cheapness and attractiveness, has made possible literally thousands of pictured publications that never could have existed before.

Fourth. The growing diffusion of education throughout the country. Our high schools, to say nothing of our colleges and universities, alone graduate 125,000 pupils a year,—all of them fit objects of solicitude to the newsdealer and subscription-agent.

Fifth. The use of wood pulp in the manufacture of paper, by which the largest item in the cost of production has been greatly diminished.

Sixth. The phenomenal growth of advertising.

I shall not attempt to amplify the first five of these causes responsible for the unparalleled growth of periodical literature. But the sixth I shall discuss at some length, for advertising is by all odds the greatest factor in the case.

In olden times the dailies carried only a very little advertising—a few legal notices, an appeal for the return of a strayed cow, or a house for sale. It is only within the past fifty years that advertising as a means of bringing together the producer and consumer began. And, curiously enough, the men who first began to appreciate the immense selling-power that lay in the printed advertisement were "makers" or "fakirs," of patent medicines. The beginning of modern advertising is in fact synchronous with the beginnings of the patent-medicine business.

Even magazine advertising, which is now the most profitable and efficacious of all kinds, did not originate until February, 1860, when "The Atlantic Monthly" printed its first "ad." "Harper's" was founded simply as a medium for selling the books issued from the Franklin Square House, and all advertisements from outsiders were declined. George P. Rowell, the dean of advertising agents, in his amusing autobiography, tells how Harper & Brothers in the early seventies refused an offer of $18,000 from the Howe Sewing Machine Company for a year's use of the last page of the magazine; and Mr. Rowell adds that he had this information from a member of the firm, of whose veracity he had no doubt, though at the same sitting he heard Mr. Harper tell another man about the peculiarities of that section of Long Island where the Harpers originated, assuring him the ague prevailed there to such an extent that all his ancestors had quinine put into their graves to keep the corpses from shaking the sand off.