Headache Cologne.
| Oil of neroli | 6 drachms |
| Oil of rosemary | 3 drachms |
| Oil of bergamot | 3 drachms |
| Oil of cedrat | 7 drachms |
| Oil of orange peel | 7 drachms |
| Deodorized alcohol | 1 gallon |
To secure a satisfactory product from the foregoing formula it is necessary to look carefully to the quality of the oils. Oil of cedrat is prone to change, and oil of orange peel, if exposed to the atmosphere for a short time, becomes worthless, and will spoil the other materials.
A delightful combination of the acetic odor with that of cologne water may be had by adding to a pint of the foregoing, 2 drachms of glacial acetic acid. The odor so produced may be more grateful to some invalids than the neroli and lemon bouquet.
Still another striking variation of the cologne odor, suitable for the use indicated, may be made by adding to a pint of cologne water an ounce of ammoniated alcohol.
Liquid Headache Remedies.—
| Acetanilid | 60 grains |
| Alcohol | 4 fluidrachms |
| Ammonium carbonate | 30 grains |
| Water | 2 fluidrachms |
| Simple elixir to make | 2 fluidounces |
Dissolve the acetanilid in the alcohol, the ammonium carbonate in the water, mix each solution with a portion of the simple elixir, and mix the whole together.
HEAT-INDICATING PAINT: See Paint.
HEAT INSULATION: See Insulation.