_c._ RED BRASS. This name is commonly applied to all those alloys which do
not contain more than 18 to 20% of zinc. In the deeper-coloured foreign
varieties (RED TOM'BAC) the per-centage of copper occasionally amounts to
88, 90, or even 92%.
_d._ YELLOW BRASS. See FINE BRASS (_above_).
_e._ BUTTON-BRASS:--1. Copper, 8 parts; zinc, 5 parts. This is the
'PLATIN' of the Birmingham makers.
2. Yellow brass, 16 parts; zinc, 2 parts; tin, 1 part. Paler than the
last.
3. Copper, 25 parts; zinc, 20 parts; lead, 3 parts; tin, 2 parts. Pale;
used for common buttons.
_f._ FOR FINE CASTINGS:--1. As fine brass, according to the colour
desired. (See _above_.)