J. Nickles on the Coloring Matter of the Privet. 327 
throw down again the blue lake. The basic, and even the neu- 
tral acetate of lead, yield with the red coloring matter of the 
privet a blue precipitate, which is soluble in acetic acid. Am- 
monia readily alters this coloring matter, giving rise to a yellow 
substance not well defined in its character. From these obser- 
compound varying between 21°56 and 28-00 per cent, and the 
: er of wines 
ee Chim. et de Phys., Dec. 1858, p. 368), would be preferable 
a extraction of liguline. I accordingly applied it, but the 
With chlorid of latinum, no change in the cold, but a brown 
ith chromate of potash a green; with bichro- 
m, um me 
oe lead, mercury and bismuth, as also the sulphates of starch, 
Fw lime, zine, manganese and cadmium are without action on 
The loring matter of the privet. 
nm bicarbonates of lime and of the alkalies (unlike the neu- 
vith ealine carbonates which turn it to green) give a blue color 
; e, and the same is true of the chlorids and nitrates of 
ane and calcium, The colors thus obtained offer however some 
* The author has previously stated that the coloring matter is soluble in ether— 
‘8 Spparently some error of the copyist.—Nor® oF THE TOR. 
