The resinous mr,ttcr o"btr.incd in the preparation of 
crystallized quassin v/a.s distilled v/ith zinc dust. The "brown 
oily product v;as treated with sodiTim and fractionally distilled. 
The jjortion pa.ssing over at 170-190*^ when redistilled gave an 
oil "boiling at 173-178^ of the formula ^h^iq, while crj'-stals 
nclting at 76-78^ were o'btaincd from the residue, 
and, imimO, A. ■■ (84) 
QUASSI1\", Gaz, Ghim. Ital. 15: 5-8. 1385. [in Italian. Abstract 
in Jour. Cham. Soc. [London] 48 (ii): 907. 1885.] 
The authors, in continuation of their investigations 
■ on quassin, point out that ty heating it in a current of dry 
air at 150° it can "be converted, with a losr; of 1 mol of water, 
into an aiihydride, quasside, Cr,,;,E.pOQ. If heated with acetic 
anhydride and sodium acetate, however, 2 mols of water are 
removed with formation of a second a,nhydride, C^pH^„Op, which 
forms a v^rhite, pca.rly, amorphous mass, soluble in alcohol, 
chloroform, and ether, ajnd melts at 150-158'^. Phosphorus penta- 
chloride reacts violently with qua.ssin to yield a pentachloro- 
derivative, C_«,H„^0^C1^, a yellow -pov/der melting with decom- 
3Ei^od d 5 
position a,t 119". This is proDa'bly derived from quassin "by 
the su"bstitution of two hj^drotjyl groupings and three hydrogen 
a,toms Dy chlorine, 
OZOLS, E, (85) 
ZAL'A SUPJCMJ LAPU UTS ( TRIOZA VIRISULA ZETT,) LauksaimniecThas 
parvrldcs izdevums, Zr'ajuma pie "Leta.s", 52 pp, Riga. 1925, 
[With suTimary in English. A'Dstract in Rev, Appl. Ent. (A) 
14: 137. 1926,] 
A decoction of quassia is one of the "best remedies for cpxrots 
a-ttac'ivod hy Trioza viridulo, Zett, 
PiMLLOT, A, (86) 
LA PAUSSE CHEHILLE DU PECKER, Rev, Hort, /J-gerie 26: 110-112. 
1923, 
Treatment with nicotine or Qraassia amara gives excellent 
control of Nc^urotoma. ( Lyda ) ncmorrlis . The qua.ssia. spray is 
prcpaJTcd as follows: MrJ:c a decoction of 1 kg. of quassia chips 
in- about 10 liters of water; heat for 2 houi^s and then cool. Dissolve 
2 i:g, of "bl;xck soap in several liters of water. Add the quassia 
decoctio3i; pass a little wa.ter again over the chips. Make up 
to 100 1. Spraying should "be done with a spray rod a"bout 2 ra, long 
rnd the Icrvos should ."be well v/et. The first spray should be 
applied 4 or 5 dcys before oviposition a.nd a second 4 days after 
the raajcir.'um oviposition. 
