1. Brunswick Black. Boil together 1/4 lb. of foreign asphaltum and 4 1/4 oz. of linseed oil (previously thickened with litharge), then mix to a proper consistence with oil of turpentine (about 1 pint).

2. Gold Size. Boil 25 parts of linseed oil with 1 of minium and 1/3 part of umber for 3 hours; pour off the clear fluid, and mix with equal parts of powdered white lead and yellow ochre, added in small successive portions. Then boil well the whole again, and pour off the clear fluid. It dries slowly but firmly. Both this and the last are dissolved by turpentine.

3. Goadby's Marine Glue. Dissolve separately in coal naphtha equal parts of shell-lac and india rubber. Mix thoroughly with heat.

4. Sealing-wax Varnish. Dissolve the best sealing-wax in enough strong spirit of wine to reduce it to the proper consistence. This is brittle.

5. Canada Balsam. This dries spontaneously. Solutions of shell-Iac, gum, and various other cements, and glues (which see), are employed by mieroscopic manipulators.