530 LEGUMINOSE. 
From the examination of the ash of some samples of Tinne- 
velly senna, Heisch reports that the average is 11°35 per cent. ; 
of this 2:43 parts are soluble in water, 8°66 are soluble in oat 
and 0°26 are insoluble. This composition is very, similar to that 
of the ash of Alexandrian senna leaves. 
_ It has been shown in a paper by C. Li Diehl (Pharm. Journ.s 
March 18th, 1876), that senna leaves when treated with alcohol 
and dried, will give preparations, which while possessing the 
purgative qualities of the leaves, are tasteless and do not gripe. 
Cold water readily dissolves the cathartin from the pods, 
which it will not do from the aes owing to the impervious 
nature of its epidermis. 
Commerce.—The imports of Arabian Senna into Bombay for 
many years amounted to about 5,000 cwts. annually; half this 
quantity was re-exported. Value, Rs. 5 to 6 per cwt. It was 
brought from Jedda, Aden, and Zanzibar, but now itis hardly ~ 
obtainable, == been driven out of the market by Tinnevelly 
enna, 
Tinnevelly Senna is exported from Tuticorin, and the season 
for collecting the leaves extends from June to December. Tho 
exports ion the last five years were as follows : — 
— es grees Ports 
n ot wit the 
Presidency. 
Year. oe Total. 
Piesiticndios 
Cwts.| Value, Cwts. Value, Cuts. |Value,| Cwts. | Value, 
Rs. Rs. Rs. Rs. 
1883-84 ...| 8,469 | Sth 1,682 | 16,343 10,151) 1,00,115 
. 4| 4,364 | 3 ; 
1884-85 ...| 6, 32,908! J) | i. | 11/052/1,15,702 - 
1885-86 ...| 9,57. aa #369 | 2,506 | 32,302 139] 780 |12,861| 69,451 
1886-87 ...|10,205 | 1,39,808|2,911 |31904 ¢. |<. |73'116/1,71,712 
1 
1887-88 ...|17,422 | 2,66,690 
3,954 | 52,179. ««. | 21,376/ 3,18, 869 
CASSIA ee ne Oollad. 
‘Senn Seunn (Bn), Sené a’ Italie. wry. se 
