Queries. A good paste for blacking boots.

Manufacturer and builder 10, 1869

A good paste for blacking boots is made from 20 parts tincture boneblack, 20 parts syrup, 3 parts castor-oil, and 1 part sulphuric acis, well mixed. A cheaper prescription is 10 parts mineed potatoes treated with 1 part strong sulphuric acid till the whole mass is lustrous black, then add 4 parts of boneblack and 2 parts of any kind of fat, lard, or oil.