The following table taken from the “Final Influenza Bulletin,” by E. R. Kelley, Commissioner of Health in Massachusetts, shows distinctly the difference that must be always borne in mind between curves of influenza incidence and death curves. In his table the mortality climbed first on the week ending January 13th, as in the table above, but the increase in influenza cases began at least one week earlier. It is characteristic of influenza epidemics that the rise of mortality curves follows that of morbidity by about a week: _Influenza and pneumonia cases in Massachusetts in the first three months of 1920._ ═══════════════════════════╤═════════════════════╤═════════════════════ │ Influenza. │ Lobar pneumonia. ───────────────────────────┼──────────┬──────────┼──────────┬────────── │ Cases. │ Deaths. │ Cases. │ Deaths. ───────────────────────────┼──────────┼──────────┼──────────┼────────── Week ending January 3d │ 41│ 0│ 109│ 9 Week ending January 10th │ 46│ 2│ 142│ 50 Week ending January 17th │ 58│ 0│ 145│ 52 Week ending January 24th │ 489│ 4│ 201│ 56 Week ending January 31st │ 4,495│ 48│ 313│ 96 Week ending February 7th │ 9,627│ 272│ 382│ 212 Week ending February 14th │ 10,747│ 133│ 583│ 140 Week ending February 21st │ 5,601│ 181│ 510│ 147 Week ending February 28th │ 2,375│ 147│ 313│ 114 Week ending March 6th │ 1,144│ 54│ 206│ 34 Week ending March 13th │ 490│ 31│ 130│ 54 Week ending March 20th │ 254│ 20│ 105│ 44 Week ending March 27th │ 147│ 14│ 102│ 94 Week ending April 3d │ 218│ 6│ 97│ 12 ───────────────────────────┴──────────┴──────────┴──────────┴────────── In Massachusetts in the first three months of 1920 there were reported 35,633 cases of influenza and 3,158 of lobar pneumonia, with 906 deaths from the former disease and 1102 from the latter. The case rate per 100,000 from influenza was 883.4; from lobar pneumonia, 78.3; the death rate from influenza, 22.4; from lobar pneumonia, 27.4; and the fatality per cent. from the former disease was 2.5, and from the latter, 34.9.