3│ 37│ 31│ 9.14│ 22│ 6.49│ 17│ 5.01│ │10.91│ „ 4│ 26│ 22│ 6.49│ 12│ 3.54│ 8│ 2.36│ │ 7.67│ „ 5│ 6│ 5│ 1.79│ 4│ 1.18│ 3│ 0.94│ │ 1.77│ „ 6│ 7│ 7│ 2.06│ 4│ 1.18│ 4│ 1.18│ │ 2.06│ „ 7│ 0│ 0│ │ 0│ │ 0│ │ │ │ „ 8│ 1│ 0│ 0.0│ 1│ 0.29│ 0│ 0.0│ │ 0.29│ „ ─────────┴─────────┴────┴─────┴────┴─────┴─────┴─────┴──────┴─────┴─────── Very dirty. (39.26 per cent. had none.) ─────────┬─────────┬────┬─────┬────┬─────┬─────┬─────┬──────┬─────┬─────── 1│ 22│ 16│14.95│ 8│ 7.47│ 2│ 1.85│ 107│20.56│ 2│ 11│ 8│ 7.47│ 6│ 5.10│ 3│ 2.80│ │10.28│} 40.18 3│ 14│ 12│11.21│ 10│ 9.35│ 7│ 6.54│ │13.08│ „ 4│ 7│ 5│ 4.67│ 4│ 3.73│ 2│ 1.85│ │ 6.54│ „ 5│ 6│ 6│ 5.10│ 1│ 0.93│ 0│ 0.0│ │ 5.61│ „ 6│ 3│ 3│ 2.80│ 2│ 1.85│ 2│ 1.85│ │ 2.80│ „ 7│ 2│ 2│ 1.85│ 0│ 0.0│ 0│ 0.0│ │ 1.87│ „ 8│ 0│ 0│ │ 0│ │ 0│ │ │ │ ─────────┴─────────┴────┴─────┴────┴─────┴─────┴─────┴──────┴─────┴─────── But even without combining in this way, the table shows us that for both years 27 per cent. of the very clean families, 26 per cent. of the clean, 23 per cent. of the dirty and 21 per cent. of the very dirty, had but one case, while 25 per cent. of the very clean, 32 per cent. of the clean, 40 per cent. of the dirty, and 40 per cent. of the very dirty, had multiple cases. The cleaner the family the less is the likelihood of multiple cases. It is rather difficult to find concrete examples of the influence of domestic habits and environment in the 1918 pandemic. The remarkably high incidence among the natives of India and among the American Indians might by some be attributed to unfavorable environment. Lynch and Cumming obtained records from a large number of institutions and from business concerns having their own records, and discovered that the influenza incidence was higher in those institutions where dish washing was done manually than in those in which mechanical washing was performed. They appear to conclude that the difference in the two methods of washing dishes was the cause for the greater incidence in influenza, thus bearing out their theory of the propagation of influenza chiefly through eating utensils. On the contrary it is possible that the presence of the mechanical washer is an indication of advanced methods, greater care in the kitchen, and better hygiene probably not only in the kitchen and dining room, but throughout the institution.