I 
- 41 - 
^e ntunber of mites, iKhich on the unsprayed Inishes was 18.6 per 
leaf, after the spraying dJoiiiLahM to 1 when lime-sulphur 
spray was used, to 2.6 with quassia, and to 2.8 with nicotine. 
Against the greenhcmse riite (Te tranychus althaeae von Hanstein) 
a still weaker solution of lime-sulphur ennilsion spray was 
used, 1 to 40, with the addition of gelatine and quassia nicotine 
emulsion, 40 g, per 1. The re«ult surpassed all .ejspectations; 
the spray covered the leaves completely with a thin film and 
an examination on tho following day revealed that all the mites 
were dead. An examination a fortnight later showed that all 
the eggs were destroyed. 
(Ill) 
vIrjL VANLIGl SPINUKVALSTIDR OCH D-^SUlS BEOlJ^AiroE. Centralanst. 
FSrsftksv. JordhruksomrSdet. , Stockholm, Flyghlad no. 58. 
Ent. Adv. no. 13. 4 pp. 1916. [Abstract in Rev. Appl. Ent. 
(A) 4: 353. 1916.] 
Spraying of plants in greenhouses with quassia is very 
useful as a control for spinning mites. 
TBOITZKY, N. N. (112) 
ABOUT CABBAGE , CEORTOPEILA 5RA.SSICAB AND PUS140DI0PH0BA 
BBASSIQAE . Proc. 2d All-Russian Ent.-Phytopath. Meeting in 
Petrograd, 25th-30th Oct. , 1920, pp. 155-177. 1921. [In Russian. 
Abstract in Rev. Appl. Ent. (A) 10: 433. 1922.] 
As it is almost impossible to free the roots of cabbage 
seedlings from the larvae and eggs of Phorbia ( Chortophila ) 
brassicae Bch. , disinfection with the following substances has 
been tried: Q,\iassia, quassia and green soap, green soap alone, 
and kerosene emulsion. The plants were dipped with the surrounding 
earth into the insecticide until the earth was saturated, after 
which they were transferred to the field. The harvest from the 
disinfected plants, particularly those treated with quassia, 
was greatly increased in comparison with untreated plants. 
TULL&RSN, A. (113) 
SKADBDJUR ?% HALLOITBUSKAR. Tridgarden no. 20: 158-159. 1916. 
[Abstract in Rev. Appl. Ent. (A) 4: 355. 1916.] 
Certain aphids occur on raspberries, but seldom in sufficient 
numbers to cause serious injury. They are easily controlled by 
spraying with quassia. 
(114) 
SKADSDJTJR I SVERIGE &REN 1912-1916. Meddel. Centralanst. 
JorsbruksfBrsBk no. 152, Ent.Avd. no. 27. 104pp. [Abstract 
in Rev. Appl. Snt. (A) 6: 145-151. 1918.] 
Typhlocyba rosae L. , chiefly on roses, was successfully 
Combated by spraying with qxiassia. 
