The CONTENTS.

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4. Additional experiments with the foregoing acids, & c.

on platina - - 473

5. Platina with aqua regia - - 475

Sect. III. Experiments on solution of platina - 478

1. Colour of thesolution, and trials of itfor faming 478

2. Crystallization of platina - 479

3. Volatilization of platina - 48 0

4. Solution of platina, with vitriolic acid — 480

5. Solution of platina, with volatile alcali — 481

6. Solution of platina, with vegetable fixt alcali 481

7. Solution of platina, with mineral alcali — 483

8. Solution of platina, with PruJJian alcali — 483

9. Solution of platina, with compound salts — 484

10. Solution of platina, with vinous spirits — 485

11. Solution of platina, with eflential oils — 486

12. Solution of platina, with cether - 486

13. Solution of platina, with tin —- 486

14. Precipitate ofplatina exposed to a burning glass 488Sect. IV. Platina exposed to firong fires, with saline, inflammable,

sulphureous, vitreous and earthy bodies — 489

1. Platina with borax - - 49°

2. Platina with alcali —- —— 490

3. Platina with nitre —— *- 491

4. Platina with common fait - - 495

5. Platina with vitriolic salts - 495

6. Platina with the essential salts of urine — 496

7. Platina with phofphorine acid - 497

8. Platina with black flux, &c. - 498

9. Platina with sulphur -- 498

10. Platina with sulphurated alcali - 499

11. Platina with earthy bodies <—--- 502

12. Platina with vitreous bodies - 503

Sect. V. Of the mixture of platina with metals - 307

1. Platina with quicksilver --—- 508

2. Platina with bismuth - 509

3. Platina with tin ----- —- 510

4. Platina with lead --— —— 512

5. Platina with arsenic * -*•- — 515

6 . Platina

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