21. (La Forest’s.) See Washes.
22. (Orfila’s.) From litharge, 3 parts; quicklime, 2 parts; starch, 1 part. The original form for this article is as follows:—Sulphate of lead, 4 parts; dry fresh-slaked lime, 5 parts; water, 30 parts; boil 1 hour, collect the paste on a piece of calico, and apply it in a similar manner to No. 1.
23. (Pomade dye.)—a. Nitrate of silver, 1 part; nitric acid, 2 parts; iron filings, 2 parts; mix, and let them stand together for 4 or 5 hours, then pour them on oatmeal, 2 parts; next add, lard, 3 parts; and mix well together.
b. From nitrate of silver and cream of tartar, of each 1 dr.; liquor of ammonia, 2 dr.; dissolve, add of lard, 4 dr.; and mix well together.
24. (Poudre d’Italie.) Resembles Orfila’s (No. 22.)
25. (Pyrogallic stain.) A weak solution of crude pyrogallic acid. Another article sold under this name is prepared by distilling nutgalls (coarsely powdered) in a retort, dissolving the solid acid which sublimes in a little hot water, and after mixing this with the acid liquid which also passes over, adding a little rectified spirit. The floating oil is then separated and the solution filtered.
26. (Redwood.) Litharge, 2 oz.; slaked lime and powdered starch, of each 1 oz.; liquor of potassa, 2 dr.; water, q. s. to form a thick cream. Used as No. 1.
27. (Redwood.) Liquor of potassa and distilled water, of each 1 pint; mix, and pass sulphuretted hydrogen through the liquid until it is saturated. Of this solution take 20 oz.; liquor of potassa, 4 oz.; mix, and label it ‘Solution No. 1,’ Next dissolve nitrate of silver, 1 dr., in distilled water, 2 oz.; and label the liquid ‘Solution No. 2,’ Used in the same manner as No. 8 and 20.
28. (Spencer’s.) From sap green, 1⁄2 dr.; nitrate of silver, 1 dr.; hot water, 1 oz. Applied as No. 3.
29. (Tincture of walnut.) A strong tincture of the shells of green walnuts, scented with oil of lavender.