- 500 - 
mARCKAL, P. (2129) 
1912(?) REPORT Oil THE RESULTS OBTAINED BI THE COLklSSION ±GR THE STUDY 
OP COCHYLIS AND EUDEi.JS DURING THE YEiJt 1911. 520 pp., illus. 
[In Prench. Abstract in Rev. Appl. Ent. (a) 1: 70-73. 1913.] 
The most effective sprays against cochylis ( Clysia, cm "b igue 1 la 
and Eudemis ( Polychrosis "botrana ) are preparations of nicotine and 
particularly "bordeaux mixture combined with nicotine. Tnirteen- 
hundredtns percent of the pure alkaloid will destroy a very large 
percentage of eggs "by killing the embryo just as it is about to emerge 
and the action will hold good for 6 or 7 days after the application 
oi the spray. Young caterpillars on bunches previously treated 
with a solution of nicotine of the sa.me strength die in great num- 
bers even 5 or 6 days after spraying, this being probably due to 
the ingestion of the liquid and the inhalation of the vapor given 
off. Nicotine solution (0.13 and 0.15 percent) produces a great 
mortality among caterpillars when applied directly especially if they 
are in an early stage of their growth, this direct. action is much 
more powerful in the case of Poly chrosi s than in that of Clysia and 
this appears to be true also of all external insecticides. 
Soap and treacle greatly assist the efficacy of nicotine sprays. 
iviARCHAL, P. (2130) 
1912. ETUDE SUP LA COCHYLIS ET L'EUDEiuIS. Prog. Agr. et Vitic. 57: 26C 
266. 
Peytaud's results on the action of nicotine are cited, showing 
that nicotine aborts the eggs of the vine moths. 
Tiie author treated a. large number of thjse eggs with pure nico- 
tine solutions (1.3 percent and 1.5 percent nicotine) and determined 
that the embryos continued to develop, but they died at the moment 
of hatching. 
FDQttSa, P. (2131) 
1913. THE CONTROL OP TKi HUE fcOTH IN THE LUXEMBURG VINE-GP.OwTNG 
DISTRICT. Luxemburger Veinztg. 1 (21): 351-355, illus. July 1. 
[In German. Abstract in Rev. Appl. Ent. (A) 1: 332. 1915.] 
Nicotine has proved to be the most satisfactory spray for 
the control of Clysia amb igue 1 1a, partly because it asphyxiates 
the moths on the wing and partly on account of its value as a 
stomach poison. Best results are obtained by spraying when the moths 
are moat numerous. A spray containing 1.33 kilograms of nicotine 
in 100 1. of bordeaux mixture, or, if greater wetting power is desirable, 
1.5 percent nicotine and 1.5 percent soft soap, may reduce the 
ravages of the pest to a. negligible quantity. 
