- 459 - 
MeGLINTOCK, C. T., HAMILTON, H. C, and LOT7E, P. B. (1988) 
1911. A FURTHER CONTRIBUTION TO OUR KNOWLEDGE OF INSECTICIDES. Jour. 
Amer. Pub . Health Assoc . 1(4): 227-238, illus . (Old Ser. Vol. 7.) 
In the laboratory a specially devised fumigating apparatus 
was used to obtain comparative results from many substances. The 
fumes from an 80 percent solution of nicotine were tested against 
the bedbug, cockroa.ch, housefly, clothes moth, and mosquito. The 
results given are in terms of the coefficient of efficiency of sul- 
phur dioxide on bed bugs (p, 233). 
VINCEN3, J. (1989) 
1911. LA NICOTINE ET LES VI TICULTEURS. Rev. Vitic. 35(909): 539-590. 
Tests were made in France on grape shoots bearing very tender 
leaves. The shoots were covered with various concentrations ranging 
from 120 to 200 g. nicotine per 100 1. water. Concentrations up to 
140 g. per 100 1. had no burning effect, but higher ones did burn slightly. 
GAVILAN, J. (1990) 
1913. POWERFUL INSECTICIDE. La Informacion Agricola 3: 127. [In 
Spani sh . ] 
Against leaf-eating insects on fruit trees the following spray 
mixture is recommended in Spain: 100 g. tobacco juice, 50 g. common 
white goap, 10 g. sodium carbonate, and 50 g. methyl alcohol. Tae 
soap is dissolved in 5 1 . water. 
MORSTATT, H. (1991) 
1914. THE MOST IMPORTANT CHEMICAL METHODS OF PROTECTING- PLANTS. 
Der Pflanzer. 10(3): 144-149. [Abstract in Rev. A pp l. Ent. (a) 
2: 447-448. 1914.] 
Tobacco mixture is used against aphids, scale insects, leaf- 
oating "beetles and thoir larvae, bugs , etc.; 3 or 4 dried tobacco 
leaves and stems a.re cut up and boiled in 10 gal. water and left 
standing for 24 hours; 10 to 20 lb. soap are dissolved in 4 gal. hot 
water and mixed with the toba.coo solution; the T^iole being diluted 
with 100 gal. water. 
STRATFORD, G. (1992) 
1914. LEAF-ROLLER CATERPILLAR. Jour. Dept. Agr. New Zealand 9: 338-339, 
illus. 
Another summer spray that appears to have done exceptionally good 
work where used is lime-siilphur l/2 gal., tobacco extract l/3 gal., and 
water 60 gal. Although this spray is chiefly used to combat the red spider, 
it is very effective on the leaf -roller caterpillar in New Zealand. 
