Iron.................................................................................Borax.

Tinned Iron........................................................................Resin.

Copper and Brass....................................................Sal-ammoniac.

Zinc.................................................................Chloride of zinc.

Lead....................................................................Tallow of re

Lead and tin pipes..........................................Resin and sweet oil.

Steel

Sal-ammoniac, 1 part; borax, 10 parts. Pound together, and fuse until clear, and, when cool, reduce to powder.

Babbitt's Anti-Attrition Metal

Melt 4 lbs. copper: add, by degrees, 12 lbs. best Banca tin; 8 lbs. regulus of antimony, and 12 lbs. more of tin. After 4 or 5 lbs. tin have been added, reduce the heat to a dull red, then add the remainder of the metal as above.

This composition is termed hardening; for lining, take 1 lb. of this hardening, melt with it 2 lbs. Banca tin. which produces the lining metal for use. Hence, the proportions for lining metal are 4 lbs. of copper, 8 of regulus of antimony, and 96 of tin.