ON PREPARING PURE CUBEBIN. 
19 
ART. IV.— ON PREPARING PURE CUBEBIN. 
By Emil Nollenberger. 
Apotliecarj, U. S. Naval Hospital, New York. 
Wishing to prepare pure Cubebin in large quantities, I 
tried many experiments to find out the cheapest and most 
practical mode. The following I found to answer best. 
The ciibebs are first coarsely powdered and macerated 
with a sufficient quantity of water in a copper still for 
twenty-four hours, then distilled as long as volatile oil 
passes over. After drying the residue, it is exhausted wiih 
alcohol, spec. gr. 0.85 ; the tincture is then put in a still and 
the alcohol driven over. The resinous matter which 
remains in the still is put aside for several days, till it forms 
a mass of crystals, which are placed on a strainer where the 
soft resin is almost entirely separated. The remainder on 
the strainer is dissolved in three or four times its weight of 
boiling alcohol, spec. gr. 0.90, and the supernatant portion 
decanted while warm, from the precipitated resin, when 
upon cooling the cubebin crystallizes. By dissolving it 
again in hot strong alcohol and filtering it through animal 
charcoal, it is obtained in beautiful wiiite, needle-shaped 
crystals. 
