FROM THE POLYGONUM FAGOPYRUM. 129 
discovered by Moldenhauer,* in the leaves cf the Ilex 
aquifolium, or common holly, and called by him Llixanthine. 
The quantity to be obtained from the buckwheat leaves 
seems, however, to be much more considerable than that 
procurable from any other source. In one experiment I 
found that 30lbs. of fresh leaves yielded 240 grains of 
crystallised rutine, or a little more than the thousandth 
part of their weight. In countries where the plant is 
cultivated it might be worth while to collect the leaves as 
a dyeing material, since the seeds are the only part at 
present employed for any useful purpose. 
* Annalen d. Chemie u. Pharm., Bd. CII. s. 346. 
VOL. XV 8 
