N. O. THYMKLACORA’ 
1111 
Ohcm. rom — The fresli bark was beaten into a paste in a mortar, and the 
mass divided and placed in two bottles, one containing ether and the 
other spirit of wine ; they were both shaken occasionally and the mixture 
allowed to macerate for 24 hours The ether extract was filtered off and 
evaporated at a very low temperature until a thick, green, greasy substance 
was loft. This was washed with warm water and a small piece placed upon 
the skin of the arm and spread, so as to cover a space the size of a rupee. In 
about two hours irritation of the skin was produced, and, on removing the 
covering of the arm, it was found that several small blisters had formed 
, under the extract and extending beyond it. The alcoholic tincture was 
then removed by filtration and carefully evaporated under a gentle heat. 
The residue contained very little of the green-coloured resinous matter, but 
a large quantity of saccharino substance, which was non-crystalline. This 
extract was applied to the skin as in the previous experiment, but the appli- 
cation was followed by only a slight reddening due to the small amount of 
resin in the dried extract. The resin appears to be the source of the vesicat- 
ing principle of tho bark. It has an acid reaction in neutral solvonts, is 
soluble in ammonia with a yellowish-brown colour, and is associated in the 
ethereal extract with a fatty base which facilitates its use as a blistering 
agont. (I’harmacog. Ind, III. 220.) 
1100. Aquilaria Agalloeha, Roxb H.F.B.I., v. 
109 ; Roxb. 377 
Sans. : — A gam. 
The Sanskrit agaru (a privative, and guru heavy —a name given to it from 
the circumstance that it does not float on water) is the root from which most, 
of its vernacular names have been derived Laghu of laulia, another Sanskrit 
and Pali synonym, is supposed by some to be the origin of the expression 
Aloes wood —and might therefore bo accepted as denoting a light form that 
would float on water. (Watt's Cornell. Prod.) 
Vern. : — Agar (Hind.); Agam, ugar (Beng.) ; Agare-hindi, ud, 
aud, audo-liindi, iide-hindi, agalugen (Arab.); Agre-liindi, agar 
(Pers.) ; Od, Qd farsi (Pb.); Agarahindiagara (Bomb.); Agar(Guj.); 
Agar, aggalichanda (Tam.) ; Krishna agaru, agni, Kashtamu 
(Tel.); Sasi, sachi, bislatn (Ass.). 
Habitat : — Eastern Himalaya ; Bliotan ; Assam ; Khasia Mts.; 
Silliet and Tippera hills. 
A tall, evergreen tree; young shoots, silky. Bark thin, tough 
and very even in surface and texture. “ The bast,” says Brandis, 
“ when prepared, resembles parchment, and was used by the 
old King of Assam to write upon.” Wood white, soft, even- 
grained, scented when fresh cut. In the interior of old trees 
