ANALYSIS OF THE ROOT OF RHEUM AUSTRALE. 289 
it weighed 21.3 grammes and must be formed entirely of lig- 
neous fibre. 
If we now compare these results with those presented by 
Hornemann, with respect to the exotic rhubarbs of China 
and Russia, we shall have the following table: 
Comparative Table of the Analyses of Indigenous and 
Exotic Rhubarb. 
Root of the Rheum 
australe. 
By O, Henry. 
Quantity 
Russian Rhubarb. 
By Hornemann. 
Rheine, (rhabarba- 
rin, yellow mat- 
ter.) 
Fixed oil, traces, 
bitter of rhubarb, 
(caphopicrite,rha- 
barbarine.) 
Apothema of tan- 
nin. 
Extract with tan-"^ 
nin and gallic | 
acid. | 
Gum or mucila- )> 
ginous matter. 
Supermalate of 
lime. 
Sugar, traces. 
Amidon. 
Oxalate of lime. 
Phosphat. "),. ~) 
Sulphat. S hmG i 
Oxide of iron. J 
Pectin and Pectic 
Acid.* 
Ligneous fibre. "\ 
Moisture. t 
Vegetable Albu- f 
men. J 
Total, 
7.30 Yellow matter. 
14. 
Quantity 
Quantity 
Bitter matter. 
Apothema of tan- 
nin. 
Extract with tan- 
nin. 
1.60 Gum. 
2. 
3.30 
.50 
46. 
20.30 
100.00 
Oxalate of lime. 
Matter extracted by 
potassa. 
Ligneous fibre. 
Humidity; loss. 
Total, 
9.58 
16.04 
1.45 
14. 
10. 
2.04 
28.3 
13.58 
4.38 
100.00 
do. 
9.16 
24.75 
1.25 
16.45 
1.30 
30.41 
15.41 
3.73 
Total. 
100.00 
* If this substance predominates much, it is owing, probably, to the 
less degree of developement of the root; whilst in the exotic plant, it has, 
from its more mature age, been changed in part to oxalic acid. 
VOL. II — NO. iv. 37 
