Part 4 (1/2)

Before the Bp. on Ch. with Na_{2}CO_{3} Reduced to a metallic powder, magnetic.

In ignition tube with Na_{2}CO_{3} and Ch.____

In flame on platinum wire____

With borax bead on platinum wire. In O. F. red while hot, yellow when cold.

With Co(NO_{3})_{2}____

10. ~Lead, PbO.~--Before the Bp. on Ch. Easily reduced to the metal, bead very malleable. Coating yellow, surrounded by white ring.

Before the Bp. on Ch. with Na_{2}CO_{3}. Instantly reduced. Coats the Ch. upon further blowing.

In ignition tube with Na_{2}CO_{3} and Ch. Reduced to the metal.

In flame on platinum wire. Tinges flame blue.

With borax bead on platinum wire. In O. F. dissolves easily, forming a limpid gla.s.s.

With Co(NO_{3})_{2}____

11. ~Manganese, Mn_{2}O_{3}.~--Before the Bp. on Ch. At high temperature turns red.

Before the Bp. on Ch. with Na_{2}CO_{3}. Is not reduced.

Before the Bp. in O. F. on platinum foil with Na_{2}CO_{3}. Transparent green ma.s.s when hot. Opaque, bluish-green when cold.

In ignition tube with Na_{2}CO_{3} and Ch. Not reduced.

In flame on platinum wire____

With borax bead on platinum wire. In O. F. violet-red while hot, amethyst-red when cold.

With Co(NO_{3})_{2}____

12. ~Mercury, HgO.~--Before the Bp. on Ch. Instantly reduced. Very volatile.

Before the Bp. on Ch. with Na_{2}CO_{3}. Reduced and volatilized.

In ignition tube with Na_{2}CO_{3} and Ch. Sublimes condensing in the upper part of the tube as a metallic ring which is seen with the lens to consist of minute globules of mercury.

In flame on platinum wire____

With borax bead on platinum wire____

With Co(NO_{3})_{2}____