12. (Chevallier.) Fresh-slaked lime, 5 dr.; water, 11⁄2 oz.; mix, strain through gauze, and pour the milk into a four-ounce bottle. Next dissolve sugar of lead, 5 dr., in water, 3 fl. oz.; add to this solution, dry slaked lime, 1 dr., stir well together, wash the precipitate with a little soft water, drain off the water, then add it to the milk of lime in the bottle, and shake the whole well together, and again before use. Applied as No. 1; but it acts much more quickly.
13. (Delcroix.) From acetate of lead, 2 oz.; prepared chalk, 3 oz.; quicklime, 4 oz.; each in an impalpable powder. Used as No. 1.
14. (Eau d’Afrique—Hopekirk.)—a. Nitrate of silver (cryst.), 11⁄2 dr.; distilled water, 2 fl. oz.; dissolve, and pour the solution into the bottles labelled ‘Solution No. 1,’—b. Liquor of potassa, 3 dr.; sulphydrate of ammonium, 7 dr.; water, 1 fl. oz.; mix, and pour the liquid into the bottles labelled ‘Solution No. 2,’ For use, the hair is moistened by means of a small-toothed comb or tooth-brush, with the Solution No. 1, either alone or diluted with a little water; care being taken to avoid touching the skin, if possible. After the lapse of 8 or 10 minutes the Solution No. 2, diluted with at least 5 times its measure of water, is applied in the same manner, and any spots on the skin removed by rubbing them with the corner of a napkin wetted with the liquid. The skin is then sponged clean with a little warm water, and wiped dry, and the hair is arranged with the comb as usual. It is better to avoid rubbing it or washing it for a few hours. Sometimes the process is reversed, and the liquid No. 2 applied first. In this way the stains on the skin are more readily removed, but the dye is less permanent than when the other plan is adopted.
15. (Eau d’Egypte.) Resembles No. 4 (above).
16. (Essence of Tyre.) Resembles the last.
17. (Grecian water.) Resembles No. 3, or 4.
18. (Dr Hanmann.) Litharge, 275 gr.
(say 1 part); quicklime, 1875 gr. (or 63⁄4 parts); hair powder (or starch), 930 gr. (or 31⁄2 parts): all in fine powder. Used as No. 1.
19. (Hewlet’s.) Resembles Spencer’s (No. 28).
20. (Instantaneous.) Moisten the hair first with a solution of nitrate of silver in water (1 to 7 or 8), and then with a weak solution of sulphydrate of ammonium. The colour of the hair, unaltered by the silver solution, instantly turns black when moistened with the sulphuret. See Eau d′Afrique.