Sewage, effect of, on water, [85–87], [115]
Sickness about a dairy, [26], [103], [115];
due to germs, how prevented, [3]
Sick room, stay away from, [75]
Smallpox, fatality of, [131];
how prevented, [135–137];
during Franco-Prussian War, [132];
in Sweden, [133];
in Gloucester, [134];
in the Philippine Islands, [134]
Spitting, dangers from, [151];
how avoided, [152];
where to spit, [152], [153];
where not to spit, [151]
Springs, how polluted, [87]
Street cuspidors, [152]
Sunshine, effect of, on germs, [77], [78]
Suppuration, how the surgeon prevents, [96];
how you may prevent, [97];
real cause of, [96]