MYRTACE. 29 
sults with the sceds in three cases of diabetes in which the urine 
_ contained from 6 to 7 per cent. ofsugar. In these cases the pow- 
_ dered seeds were given in doses of one gram 4 to 6 times a day. 
2 Description,—The fruit unless improved by cultivation 
is about the size and shape of a small olive, of a purple colour, 
and very astringent; within it is a thin white papery shell, 
which encloses a large green kernel, also very astringent. The 
bark is grey and fissured externally; internally it is red and 
fibrous ; its minute structure is remarkable in having several 
_ rows of very large, pitted, oblong-oval cells, which can be 
easily seen with the naked eye. The odour is like that of oak- 
_ bark, and the taste very astringent. The leaves are 3 to 6 
inches long, ovate or oblong, obtuse, more or less acuminate, 
_ coriaceous, smooth, shining, closely nerved, the numerous 
nerves uniting within the margin, When crushed they have 
_ an agreeable terebinthinate odour, and on distillation yield a 
_ bright green oil. 
Chemical composition.—The proximate composition of dry 
Jambul seeds according to Elborne is— 
Essential oil a trace — 
Chlorophyll and fat 0°37 — 
Resin soluble in alcohol aad ether sy imei OOO 
Gallic acid vey ee 
Albumin 1°25 
Coloured extractive soluble in water ............ 2°70 
Moisture 10°00 
Tusoluble residue Wicks, Oe 
100-00 
’ Jambulin, a eect is stated to have been found in the 
seeds; itis said to have the power of preventing the diastatic 
j conversion of starch, &., into sugar. The bark of the tree. 
= contains 12 per cent. of tannin and affords a Kino-like gum es 
Commerce.—The © at and seeds are ‘sold in the 
rkets, 
