The question is answered eloquently and finally by the subscription records of the magazines that were forced to increase their rates on Canadian subscriptions when Canada enforced a 4-cent rate on American periodicals. As the discriminatory rate was later withdrawn in certain cases, we have a complete cycle of record and proof. First, the Canadian subscription list before the increase; second, the Canadian subscription list after the increased postal rate and increased subscription price to the Canadian public; third, the Canadian subscription list after the postal rate and the subscription price to the public had been restored to the original status. HERE IS THE RECORD OF THE REVIEW OF REVIEWS. In June, 1907, the Review of Reviews began to pay 4 cents a pound postage on Canadian subscriptions, instead of 1 cent, and was forced to raise its Canadian subscription price from $3 to $3.50 a year. Its Canadian yearly subscribers in July, 1907, numbered 2,973. At once the subscription list began to fall off, and continued to do so steadily until in January, 1910, it had come down to 904 names. Early in 1910 the Review of Reviews was readmitted into the Canadian postoffice at 1 cent a pound, its subscription was reduced to the old figure of $3, and the Canadian list quickly “came back,” having reached already in February, 1911, the figure of 2,690 annual subscribers. Below follows the detailed record, eloquent of what would happen if the prices of popular American magazines were increased 50 per cent to the public. In this Canadian incident the price of the Review of Reviews was increased only 16⅔ per cent and the circulation fell off 69 per cent. REVIEW OF REVIEWS--CANADIAN SUBSCRIBERS.