_Annual death rates from all causes by week in certain large cities of the United States from week ending January 3d to week ending February 21st._ ═══════════════╤═══════════════════════════════════════════════════════ City. │ Week Ending ───────────────┼───────────────────────────┬─────────────────────────── „ │ January. │ February. ───────────────┼──────┬──────┬──────┬──────┼──────┬──────┬──────┬────── „ │ 3│ 10│ 17│ 24│ 31│ 7│ 14│ 21 ───────────────┼──────┼──────┼──────┼──────┼──────┼──────┼──────┼────── Kansas City │ 16.3│ 15.8│ 19.3│ 32.7│ 39.5│ 61.5│ 44.0│ 29.1 Chicago │ 14.4│ 13.8│ 15.1│ 23.5│ 41.3│ 39.1│ 24.6│ 17.7 New York │ 14.0│ 15.3│ 14.6│ 19.5│ 28.0│ 35.0│ 35.1│ 24.8 Milwaukee │ 11.6│ 12.5│ 9.0│ 15.6│ 29.4│ 34.5│ 27.1│ 16.9 Detroit │ 13.7│ 13.0│ 14.2│ 15.5│ 33.9│ 60.9│ 42.9│ 21.6 Boston │ 16.8│ 16.9│ 14.1│ 16.8│ 20.3│ 27.1│ 33.7│ 32.1 San Francisco │ 16.5│ 15.4│ 19.6│ 19.2│ 22.9│ 25.2│ 31.8│ 28.8 Philadelphia │ 15.6│ 16.7│ 16.2│ 16.8│ 18.3│ 22.1│ 34.3│ 37.2 New Orleans │ 18.8│ 19.6│ 22.6│ 18.8│ 20.9│ 20.1│ 25.0│ 32.3 ───────────────┴──────┴──────┴──────┴──────┴──────┴──────┴──────┴────── The relative severity of the two epidemics in certain of the large cities has been compared by H. F. Vaughan, and he has found as is seen by the table that Kansas City and Detroit, two of the early cities affected, had the highest mortality in 1920. Philadelphia in 1918 lost nearly three times as many people as Detroit did in 1920. Detroit was higher than Chicago in 1920, but lower in 1918. _Per cent. of population killed by influenza._ ═════════════════╤═════════════════╤═══════════════════════════════════ │ 1920. │ 1918–1919. ─────────────────┼─────────────────┼─────────────────┬───────────────── │ First seven │ First seven │Twenty-one weeks. │ weeks. │ weeks. │ ─────────────────┼─────────────────┼─────────────────┼───────────────── Detroit │ 0.20│ 0.17│ 0.28 Chicago │ 0.12│ 0.34│ 0.41 Kansas City │ 0.24│ 0.30│ 0.63 Philadelphia │ 0.10│ 0.76│ 0.82 New Orleans │ 0.05│ 0.55│ 0.77 ─────────────────┴─────────────────┴─────────────────┴─────────────────