Means: bathing

The external application of cold to the head in madness is a very rational remedy, and has been often employed, with advantage, to appease irritation and fury, and to induce sleep. The modes of application may differ according to the degree of cold required, or the effect intended. In some cases, in which only partial application of cold is required, simple ablution of the head with cold water, or wrapping wet cloths around it, frequently renewed as they get warm, are the most convenient methods. In others where the application is intended to be general, the common cold or shower baths are preferable.

C***
Practical Observations on Insanity, p. 135.