23 JANUARY 1892, Page 16

[To TEE EDITOR OF THE "SPECTATOR."] Sin,—In a paragraph of

the Spectator of January 16th, you call attention to the immunity from influenza produced by the scattering of a few drops of eucalyptus oil in a room. May I say that by far the beat way to use this oil is to sprinkle a few drops on one's handkerchief each morning, so that this valuable disinfectant is always present about the person ? As it is now manifest that the disease is infectious, to be always prepared to resist it seems the only sure method of preventing it.—I am, Sir, &c.,