bilo:::^;, p. ' ... (27) 
THE CIVIL ME MTIIRAL KISTOHY OF J^aLUCA, 503 .PP. Londo.n. 1789. 
Of terolDinthuG, the "birch or turpentine tree, the puthor says 
that the "bai^k of the root is thoij^ht to he th-^ Sima-rouha of the shops, 
which is the most effective remedy yet known in bloody fl^ixes 
(p. 345). 
CjiRIMINI, M. . (28) 
G-LI AFIDI DSLLS PIAIITS DA J'HU-TTO E I MEZZO PER COMBATTEFil. 
Hote Pruttic,?(5): 90-38. 1931. [Abstract in Hcv. Ap^a. Int. 
(A)20: 438. 1^:32.] 
The aphids infesting fruit trees in spring'; in Italy are 
Hyalopterii s srundinis P, ( pruni P.) on plum, peach, apricot, 
and almond; My zus cer^isii P. on cherry' ; Anuraj'his em ygdoli 
Euckt. ( persi cae 'hoj, ) on peach, which i-s also attacked by 
A« pcrsicae-nigcr Siiith; and Aphis pomi DeG. ( iaali P.) v/hich 
occurs on apple and pear without doij:ig; much harm. Sprays of 
quassia and soap are recoEuiended. 
CATuLOS, A, S. (29) 
THE MAMJPACTUEE OP INSECTICIDES AI^D FLWaiCIDES, V. MATSP.IALS 
USED. Pert, Peed. Stuffs, and Pr.rm Supplies Jour. 16: 
302-303. 1951. 
QuasKia wood, which consists of the trunk'o and branches 
of Picraena excolsa, .?Jid Quassia amara, imjjorted from Jamaica, 
is white or yellowish, not hard, a:':d has a bitter taste but no 
odor. The wood of Q,, nmarg (Surinam quassin.) is deep yelloa 
and is harder a.nd heavier than the other variety, Quassia wood 
is easily cleft and is usually met wi tJ-: in coLuncrcc in the 
forta of splintery raspings or coarse chips. The method of 
making the chips aad drying the wood is outlined. The chips 
are sold for use in making homo-made washes or are used in 
the m.anufacturc of q,ua.ssia extract for the production of 
insecticides. A simple commercial method of oxtractir^g quassia 
is described. 
The £ictivo principle is quassinc, r cr^^'strllinc alkaloid 
slightly soluble in water, but more so in alcohol or other 
orgrnic solvents. It is present in the chips to the extent 
of about 0,75 percent. It is a powerful insecticide but non- 
poisonous to higher rniraals. 
