6. Acetic acid, glacial and dilute (1 to 5).
7. Chromic acid, very dilute, to harden tissues.
8. Solution of potash, saturated and dilute (1 to 10).
9. Solution of soda (25 gr. of fused soda to 1 oz.).
10. Ammonia (1 part of the strongest solution to 3 of water).
11. Nitrate of baryta, a cold saturated solution of.
12. Nitrate of silver (120 gr. to 2 oz.). These two are for the mineral acids.
13. Oxalate of ammonia in solution. Test for lime.
14. Solution of iodine saturated, i.e. 1 to 7000 parts of water. Another solution is—1 gr. of iodine and 3 of iodide of potassium in 1 oz. of distilled water.
1. Cements.—1. Brunswick Black. Boil together 1⁄4 lb. foreign asphaltum and 41⁄4 oz. of linseed oil (previously thickened with litharge), then mix to a proper consistence with oil of turpentine (about 1 pint).