BURSERACEAE. 311 
produce of B. Roxburghti, occurs in irregular lumps, covered 
‘More or less with dirt and hair, to which portions of papery 
_ bark as wellas the thick inner bark sometimes adhere; it 
is of a greenish yellow colour, with an occasional tinge of 
red ; consistence waxy, soft, and brittle ; odour peculiar and 
BB enics something like cedarwood ; athe bitter. With water 
it forms a greyish-white emulsion ; when inflamed it swells and 
_ Of Boswellia serrata. We have been favoured by Mr. Woodrow 
with fresh specimens of the stem and exudation of B. Roa- 
burghii collected near Peit, about 80 miles north of Poona, 
where the tree has been planted to form a hedge round a 
Hindu temple. 
Description. +The epidermis of Balsamodendron Rox- 
burghii consists of several rows of delicate elongated cells, - 
Containing a little granular matter; the cells beneath this, 
: which form the green bark, are loaded with chlorophyll and 
starch. Proceeding inwards the chlorophyll gradually dimi- 
nishes, and a few bundles of liber cells are met with, forming 
a broken irregular zone, Within this the cells contain 
granular matter, starch, and globules of balsam ; balsam ducts 
_ permeate the bark at intervals, and the eins rays are 
distinctly traceable; a few conglomerate raphides are met 
_ with. The wood, which is white, soft and brittle, consists of 
: elongated thin walled cells divided into zones ; ; in the zone 
_ hext the bark the cells (18 to 20 rows) are empty, or contain | 
a little starch; in the next they are smaller and loaded with 
darge starch pe, The same kind of structure is con~ 
tinued to the central pith, which consists of cells of starch. 
The exudation of this tree as cultivated at Peit is at first 
Opaque and milky; as it dries it becomes greenish and | tre 
lucent, and finally solidifies. _Mahometan writers deser 
| different kinds of Bdellium under the name of Mi tk 
Suish several kinds, all of which are bitter 
nea nage they call Mububi-asrak; 
