Which Has Gained Most Population Pop-ulation is Question Many Are Asking WASHINGTON, April 13. St. Louis, fourth city of the country in 1910, had a population of 773.000 on January 1 this year and showed an increase of 85,'J71, or 12.5 per cent over ten years ago. Thc rate of growth during the last ten years was the smallest of any decade since the founding of the city and the increase in number was smaller small-er than in any decade since that ending end-ing In 1880, when the rate of increase was 12.8 per cent. Whether SL Louis or Boston will rank as the country's fourth largest city us a result of the 1U20 census added interest to the announcement today of SL Louis population. Boston's Bos-ton's population has not yet been made public. . St. Louis ranked fourth in 1910. Since 1910 Boston has annexed the town or Hyde Park, having a population popu-lation in 1910 of 15,507. St. Louis and Boston were the only cities within' the 600.000 class in 1910. Cleveland, Baltimore and Pittsburgh, Pitts-burgh, ranking sfxth, seventh and eighth, were the only cities within the 500,000 class. A change in their ranking rank-ing for 1920 is not improbable, and Detroit, Buffalo and San Francisco ranking ninth, tenth and eleventh, the only cities within the 400,000 class, may advance Into different rank. Thc population of none of these has been announced. Population announcements today: St. Louis. 773,000; St. Louis increase, in-crease, S5.971, or 12.5 per cent. Perth Amboy, N. J., 41,707; increase in-crease 9;5SC, or 29.S per ce.nl. Ur.Ioutown, Pa. 15G09; increase 2,265. or 17.0 per cent. Massillo'n, O., 17,128; increase 3,519, or 25.6 per cent. .Chilllcothe, O. 15831; increase 1,323, or 9.1 per cent. Vinita, Okla., (revised) 5,010; Increase In-crease 928, or 22.7 per cent, Watertown N. Y. 31203; increase 4,533, or 17.0 per cent. ( Galesburg, 111., 23,785; increase 1.G9R, or 7.7 per cent. Charleston, W. Ya., 39,608; increase in-crease 16,612, or 72.2 per cenL West Hoboken. N. J., 40j06S; increase in-crease 4665 or 13.2 per cent. Duquesnc, Pa., tfa.Oll, increase 32S4 or 20.9 per cent. Bellaire O. 15061; increase 2115; or 16.3 per cent. Marline's Ferry O. 1634; increase 2501, or 27.4 per cent. Tamauqua, Pa. 12363; increase 2,901, or 30.7 per cent.