1. Substances which, like the halogens, appear to form substitution compounds, e.g.
Chlorine, Bromine, Iodine.
2. Substances which probably combine chemically, and thus destroy contagion:
Sulphurous acid, Nitrous acid, Fumes of other acids.
3. Oxidising substances, such as—
Pure air, Oxygen, Ozone.
4. The volatile oils, &c. Feeble disinfectants, supposed, however, to oxidise—
Camphor, Oil of hops, Oil of rue, Oil of rosemary, Oil of chamomile.
II. Solid or Liquid Disinfectants.
1. The chlorides of different metals, earths, or bases: