132 
SELECTED ARTICLES. 
6. At first no change; in a few minutes whitish turbidness; 
in 24 hours reddish flocks form a sediment. 
7 and 8. No change. 
9. Lively green colour, clear; in an hour slightly turbid; 
in 4 or 5 hours greenish black flocks; the supernatant liquor 
clear green. 
10. Flocky light yellow precipitate; in half an hour a sedi- 
ment: supernatant liquor whitish, turbid. 
11. Flocky dirty reddish white precipitate; in one-half to 
three-quarters of an hour large gelatinous flocks; supernatant 
liquor clear, colourless. 
12. Copious whitish turbidity; speedily fine flocks, in half 
an hour subsiding, and in 24 hours occupying one-third of the 
bulk of the solution; supernatant liquor clear, colourless. 
13. Much yellowish red brown turbidness; speedily fine 
flocks; in half an hour a sediment, which in 24 hours occupies 
half the bulk of the liquid; supernatant liquor clear, colour- 
less, 
14. Copious yellowish white turbidness, speedily fine flocks; 
in three-quarters of an hour to one hour a sediment, and a 
brown colour in 24 hours occupying one-third of the space of 
the liquid; supernatant liquid clear, somewhat yellowish. 
15. Much turbidity; in a few minutes whitish flocks; in an 
hour a sediment, which in 24 hours occupies one-half of the 
bulk of the liquid; supernatant liquid clear, colourless. 
16. At first no change; in a quarter of an hour a violet 
blue colour; subsequently, a turbidness; in 3 hours brown 
flocks. 
17. Greenish brown colour, clear; in half an hour turbid; 
in 5 or 6 hours greenish black flocks, forming a sediment. 
18. Much turbidness; in a few minutes fine flocks; in half 
an hour a gelatinous yellowish white sediment; supernatant 
liquid whitish, turbid. 
19. 20 and 21. No change. 
22. Large cheesy dirty light yellow flocky precipitate. 
23. No change. 
24. At first no change; in 1 or 2 hours slight turbidness; 
in 24 hours flocks becoming a light red sediment. 
