130 
SELECTED ARTICLES 
14. Nitrate of Mercury. — White turbidness quickly form- 
ing fine flocks, settling in i an hour into a light greenish 
brown precipitate; occupying, after 24 hours, \ of the bulk 
of the fluid. Supernatant liquor straw yellow, clear. 
15. Tartar Emetic. — Copious white turbidity, quickly 
forming white flocks, and after 5 or 6 hours a w^hite gelatinous 
precipitate, occupying in 24 hours § of the bulk of the fluid. 
16. Nitrate of Silver. — After § an hour, copious white 
turbidness; after 24 hours, flocky brownish gray precipitate. 
17. Chloride of Iron. — Pure light green colour; clear after 
24 hours, granular flocky, brownish gray sediment; superna- 
tant liquor, clear and light green. 
18. Chloride of Tin. — White turbidness; after \ of an 
hour flocks; after 24 hours occupying f of the bulk of the li- 
quid. 
19 to 21. Nitrate of Barytes, Sulphuric and Muriatic 
Acids. — No change. 
22. Infusion of Galls. — Slight turbidness; after 2 hours 
fine flocks; after 24 hours a yellow sediment. 
23. Alcohol. — No change. 
24. Lime. — Copious white turbidness; in ^ an hour yel- 
lowish white flocks, then a gelatinous sediment. 
CINCHONA FLAVA DURA. 
1. Light-wine-yellow, easily passing through the filter, 
bitter, astringent, strongly acid reaction. 
2. Light brown; in 24 hours clear. 
3 and 4. Action the same as that of ammonia. 
5. At first no change; in half an hour a brown colour with- 
out turbidness. 
6. White turbidity; in a few hours a granular flocky white 
sediment. 
7 and 8. No change. 
9. Light yellow colour; after 24 hours still clear. 
10. Copious white turbidness; in one hour a sediment, 
which in 24 hours occupies a quarter of the bulk of the li- 
quid. 
