310 
Selected Articles. 
FIRST SERIES. Treatment with water. 
Rataivhy. — 
Maceration. Displacement. 
Powder, 185 grammes. 
1. treat. 100 
gave 8 of extract. 
8 
Water, 370 
2 
" 100 
After having been pressed, 
3 
" 100 
5 
the powder retained 100 
4 
" 100 
2 
grammes of water, and af- 
5 
« 100 
2 
forded 270 of result. 
6 
" 100 
3 
1. treat. 270 gave 13 gr. ext'ct. 
7 
" 100 
2 
2 " 270 8 
8 
" 100 
1 
3 " 270 4 
9 
" 400 
4 
810 25 
1200 
35 
The method by displacement was most advantageous as 
regarded the product, since it gave 35 of extract against 25. 
It was equally advantageous with respect to the quantity of 
water employed. By maceration it required 270 grammes 
to obtain 15 of extract, whereas by displacement 16 were ob- 
tained with 200 grammes. Moreover, to obtain 15 grammes 
of extract, I employed 810 grammes of water in the process 
by maceration, whilst I had an equal result with 500 grammes 
of water by displacement. It was likewise observable that 
the liquors obtained by maceration were of a dull red, whilst 
on the contrary those by displacement were of a brilliant tint. 
This operation, repeated on a fresh quantity of the same 
root, gave an analogous result. 
Liquorice root. — 
Maceration. Displacement. 
Powder, 330 grm. 
1. 
100 
11 extract. 
Water, 660 
2 
it 
13 
The powder retained 140 of 
3 
13 
water. 
4 
tt 
14 
1. treat. 520 grm. gave 38 ex- 
5 
tt 
14 
tract. 
6 
it 
9 
2 520 " 18 
7 
9 
3 520 " 3 
8 
5 
9 
ti 
3 
1560 59 
10 
it 
3 
11 
ft 
3 
12 
tt 
1 
1200 
98 
