ACTION OF RE-AGENTS ON CINCHONA. 131 
11. Like the subacetate of lead. 
12. Turbid; in two hours reddish flocks. 
13. Yellowish white turbidness; in a quarter of an hour 
dirty-reddish yellow gelatinous flocks, which occupy in 24 
hours half of the bulk of the liquid. 
14. Yellowish white turbidness; in a half an hour or three 
quarters, a yellow gelatinous sediment, which in 24 hours oc- 
cupies one-fifth of the bulk of the fluid; the supernatant liquor 
clear, pure bright yellow. 
15. No change. 
16. Slight turbidness; in 3 or 4 hours the light brown 
flocks become darker. 
17. Greenish brown colour; still clear after 24 hours. 
18. Copious white turbidness, in a few minutes flocks; in 
half an hour a gelatinous sediment, which in 24 hours occupies 
one-eighth of the bulk of the liquid. 
19. Scarcely any muddiness; in 2 hours light reddish 
flocks. 
20 and 21. No change. 
22. Turbidness; in 2 or 3 hours light reddish brown 
cheesy flocks. 
23. In 24 hours scanty gelatinous flocks. 
24. No change. 
CINCHONA FLAVA FIBROSA. 
1. Light wine yellow, readily passing through the filter; 
smells weakly of tan; taste slightly bitter, astringent; reac- 
tion acid, 
2. Yellowish white turbidness; soluble in the smallest 
excess, leaving a yellow colour; in 4 hours the liquid be- 
comes brownish red. 
3. The same. 
4. Yellowish white turbidness; precipitate soluble in an 
excess, leaving a pure yellow colour; in an hour the colour 
changes, as with ammonia. 
5. At first no precipitate ; after an hour a yellowish red 
turbidity; in 5 or 6 hours reddish flocks form a sediment. 
