Blacking is now always made with ivory black, treacle, linseed or sweet oil, and oil of vitriol. The proportions vary in the different directions, and a variable quantity of water is added, as paste or liquid blacking is required; the mode of making being otherwise precisely the same. (Sec 141.)

182. Liquid Blacking

1. Ivory black and treacle of each one pound, sweet oil and oil of vitriol of each a quarter of a pound. Put the first three together until the oil is perfectly mixed or "killed;" then add the oil of vitriol diluted with three times its weight of water, and after standing three hours add one quart of water or sour beer.

2. In larger quantity it may be made as follows: ivory black three cwt.,. molasses or treacle two cwt., linseed oil three gallons, oil of vitriol twenty pounds, water eighty gallons. Mix as above directed.

183. Paste Blacking

1. Ivory black two pounds, treacle one pound, olive oil and oil of vitriol of each » quarter of a pound. Mix as before, adding only sufficient water to form into a paste.'.

2. In larger quantity: Ivory black three cwt., common treacle two cwt., linseed oil and vinegar bottoms of each three gallons, oil of vitriol twenty-eight pounds, water a sufficient quantity.- Note. The ivory black must be very finely ground for liquid blacking, otherwise it settles rapidly. The oil of vitriol is powerfully corrosive when undiluted, but uniting with the lime of the ivory black, it is partly neutralized, and does not injure the leather, whilst it much improves the quality of the blacking.

184. Best Blacking For Boots And Shoes

Ivory black one and a-half ounce, treacle one and a-half ounce, sperm oil three drachms, strong oil of vitriol three drachms, common vinegar half a pint. Mix the ivory black, treacle, and vinegar together, then mix the sperm oil and oil of vitriol separately, and add them to the other mixture.

185. Boot-Top Liquid

Ox-alic acid and white vitriol of each one ounce, water one and a-half pint. To be applied with a sponge to the leather, previously washed, and then washed off again. This preparation is poisonous.