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The CONTENTS.

Platina with zinc ———

Platina with regulus of antimonyPlatina with silver -

Platina with gold --

Platina with copper --

. Platina with copper and zincPlatina with copper and tin

Platina with iron --

Platina with metallic glassesGeneral observations on thewith other metals - . ....

Sect. VI.

mixture of platina

-- 539

Of the Jpecifc gravities of mixtures of platina with

different metals - --- 1541

Sect. VII. OJ the effect of fre and air on mixtures of plqtina with

certain metals -> - ^57 '

3L. Calcination of tin with platina - 347

2. Separation of mercury from platina- —>— 448

3. Separation of arsenic from platina, — 549

4. Separation of regulus of antimony from platina ^>9

5. Separation of zinc from platina - 361

6. .Cupellation of plasma with lead -* 561

7. Cupellation of plafina with b :

Sect. VIII.O/ the affinities of platina

1. Mercury: Platina: Lead

2. Mercury: Gold: Platina

3» Platina: Lead: Iron . —

4. Aqua regia: Zinc : Platina .

3. Aqua regia: Iron: Platina

6 . Platina:

Gold

7. Aqua regia: Copper: Platina.,

to

Aqua regia and solution of inon vitriol:

_ __ __ .Co

Aqua regia: Lin: PlatinaAqua regia: Mercury: PlatinaAqua regia: Nickel: PlatinaPlatina, gold, and aqua regiaP lat ina, fiver, and acidsPlatinalead, and acids

Platina, regulus of antimony, and aqua regia 589 .Platina, bismuth, and acids -—- 59 a :..