OBSERVATIONS ON THE PRECEDING PAPER* 181 
These two extracts were both very aromatic ; that of the 
Codex being, however, rather less so than the other, and 
its color being darker. 
.1 diluted them with water, and obtained the following 
results: — 
M. Burin's Extract, diluted 800 to 1, specific odor 
destroyed. 
1000 to 1, specific taste 
destroyed. 
2000 to 1, bitterness de- 
stroyed. 
Extract of the Codex, diluted 400 to I, specific odor 
destroyed. 
S00 to 1, specific taste 
destroyed. 
1000 to 1, bitterness de- 
stroyed. 
The substitution of spirit, sp. gr. 0.834, for spirit, sp. gr. 
0.921, does not, therefore, afford a very great advantage. 
Extract of Gentian. 
One kilogramme 
of the substance. 
Extract 
obtained. 
Proportion. 
Water 
dissolves. 
Spirit, sp. gr. 
0.921 
dissolves. 
Spirit sp. 
gr. 0.83-1 
dissolves. 
Process of M. ? 
Burin. ^ 
Process of the 5 
Codex. 5 
112 gr. 
364 gr. 
;1::8.9 
:1::2.75 
The whole, 
except some 
flakes. 
98 per cent. 
The whole. 
85 per cent. 
96 per c 
20 per c. 
Extract of M. Burin, diluted 10,000 to 1, bitterness still 
very perceptible. 
20,000 to 1, bitterness dis- 
tinct. 
Extract of the Codex, diluted 4000 to 1, the color sen- 
sible, bitterness distinct. 
20,000 to 1, bitterness de- 
stroyed. 
The extract made with spirit, sp. gr. 0.834, contains the 
