136 APPENDIX, 
SIMARUBEZE. 
Quassine. 
Oliveri and Denaro give the following mode of preparation of 
quassine (Gaz, Chim. Ital., No. XIV.): Infuse for six hours 10 kilo- 
grams of powdered quassia with 45 liters of boiling water, taking 
care to retain the heat. Decant the liquid and make a second 
infusion, Unite the liquors and evaporate to 10 liters, filter and 
precipitate with q,s. of tannin. Place this impure tannate of quas- 
sine upon a filter, wash carefully, dilute with water, treat with 
carbonate of lead, and dry in a water-bath. Treat the tannate of 
lead and quassine two or three times with boiling alcohol, and distil 
the united liquors, The residue deposits crystals of quassine mixed 
with resinous matter. Purify by repeated erystallizations in alcohol 
and water. Thirty kilograms of quassia give 10 grams of pure 
erystallized quassine. Evaporations should be made slowly and 
alkaline reactions should be avoided. 
BURSERACEA. 
Chemistry of Myrrh. 
Dr. Oscar Kohler publishes the results of a chemical examination 
of Myrrh from Sumali (Archiv., June 2, 1891, p. 291): Ash 2°79 
per cent., portion soluble in water 57 to 59 per cent., consisting of a 
gum, C°H*°O*. The portion soluble in alcohol was a mixture of 
resins. The greater portion was an indifferent soft resin (C) soluble 
in ether, C?*HO°, Two bibasic acid resins, one (A) C'°H?°03, 
and the other (B) C?*H**0°. The essential oil 7 to 8 per cent.; 
the principal constituent corresponds to the formula C°H?*O0, If 
_ the formula for A resin be doubled, all three formule will contain 26 
atoms of carbon, and the resins differ in the amount of oxygen they 
contain— 
Indifferent resin C = 0?*H"0? (OH), 
9 
Resin acid B = C7*H**0 
Resin acid A = O7*H*016, 
MELIACEZ, 
- WNaregamiaalata. 
Naregamia has been physiologically investigated by Dr. Stefan 
Schengut of Vienna, He used it in 24 cases, namely,one of dysentery 
