9. Strong mercurial ointment, 1 lb.; lard, 4 lbs.; Venice turpentine, 8 oz.; oil of turpentine, 2 oz. If mixed by heat, care must be taken not to use more heat than is necessary, and to add the oil of turpentine when the other ingredients begin to cool and to stir till cold.—M’Ewen.
10. Corrosive sublimate, 2 oz.; white hellebore, 3 oz.; fish oil, 6 quarts; resin, 1⁄2 lb.; tallow, 1⁄2 lb. The sublimate and then the hellebore to be rubbed with a portion of the oil till perfectly smooth, and then mixed with the other ingredients melted together.—Stevenson.
11. The following once had considerable local celebrity, but it obviously requires to be used with caution. Dissolve 21⁄4 oz. of corrosive sublimate in the same quantity of muriatic acid, and beat up the solution with 6 lbs. of strong mercurial ointment; put in a large pan, and pour on it 191⁄2 lbs. of lard, and 11⁄2 lb. of common turpentine, melted together and still hot, and stir the whole continually until it becomes solid.
12. Castor-oil seeds well bruised and steeped for 12 hours in sour milk, after straining rub the liquid briskly into the skin. (An Indian remedy.)
SCAGLIO′LA. A species of plaster or stucco, made of pure gypsum, with variegated colours, in imitation of marble. In general, the liquid employed is a weak solution of Flanders glue; and the colours, any which are not decomposed or destroyed by admixture with sulphate of lime and exposure to the light. The composition is often applied upon hollow columns formed of wood, or even of laths nailed together, and the surface, when hard, is turned smooth in a lathe, and polished.
SCALES. A special article under the head of “Balance” has been devoted to the scales employed by the chemist and analyst.
But although these claimed from their greater complexity of structure and the extreme delicacy of movement required of them a separate notice, every pharmacist and apothecary will recognise the importance of bestowing an equal amount of attention upon his dispensing scales; and, to ensure accurate weighing by them, will take care to keep them scrupulously clean, and properly poised.
For dispensing purposes, scales fitted with glass pans (or at least with one glass pan, in which medicinal substances can be weighed) should always be employed. The beams should
be of steel, and the attachments of one piece of brass only, in preference to chains, or supports of silken thread. The beams are best cleaned with sand paper, or rotten stone, and may be protected from rust by being rubbed over with a little almond oil.
SCALD-HEAD. See Ringworm.