_Manufacture of Glazes._--No handling of white or red lead without at least 5 per cent. of added moisture, and no weighing out, etc., nor employment in the room, to be allowed within thirty minutes of such weighing out, etc., without the wearing of a respirator. _Lawning_--_i.e._, straining glaze so as to remove insufficiently ground material through a fine lawn sieve--to be done by an adult male only, except where less than a quart of glaze is lawned. _Dipping._--Impervious floors sloped towards a drain to be cleaned by an adult male, after work has ceased, with a jet of water and a mop. Walls adjacent to dipping-tubs to be tiled or painted with washable paint, and cleaned daily. Dipping not to be done where artificial light is necessary during hours of daylight. _Threading-up and Thimble-picking_ to be done in a room sufficiently separated from any place where scheduled processes are carried on. _Drying Ware after Dipping._--The same requirement as to floors as in dipping-house. _Boards._--To be cleaned with clean water by an adult male after each time that dipped ware has been placed on them and before subsequent use. Boards for use in lead processes to be painted red at the ends. _Mangles._--Ventilation to be so arranged as to maintain a flow of air into the hot chamber from the workroom. Mangle shelves to be thoroughly wet cleansed once a week. _Ware Cleaning._--Local exhaust ventilation to be applied except when the process is carried on entirely with use of wet materials (damp sponges, etc.), or when done within fifteen minutes of application of glaze. Troughs to be provided to collect glaze, and to be cleaned out and supplied with fresh water at least once a week. The floors and standard of lighting to be the same as for the dipping-house. _Glost-placing._--Boards to be treated as already described. Floors to be impervious. Women, young persons, and children to be excluded, except that women to be allowed to place china furniture and electrical fittings. _Majolica Painting and Mottling._--A sponge and clean water to be placed beside each paintress; special washing accommodation in the painting-room or adjoining it; splashes to be removed immediately by wet sponging. Work-benches and floors to be subject to the same conditions as potters’ shops. _Flow Material_--_i.e._, the substance usually containing much lead in the form of powder and placed in the sagger to cause certain colours applied to biscuit ware to run slightly--to be weighed out in front of an exhaust draught and delivered to the glost-placer by an adult male. PLATE IV [Illustration: FIG. 1.--NO LEAD USED.] [Illustration: FIG. 2.--FRITTED LEAD USED. 0·9 per cent. solubility.] [Illustration: FIG. 3.--FRITTED LEAD USED. 1·5 per cent. solubility. 13·9 per cent. total lead.] [Illustration: FIG. 4.--FRITTED LEAD USED. 5·0 per cent. solubility. 5·0 per cent. total lead.] [Illustration: FIG. 5.--RAW LEAD USED.