- iS - 
It may sJ-so "be employed as a dust rith a carrier such as lime or xjith 
calcium arsenate, at rates of from 5:95 to 15:85. The dust is prepared 
ty spraying the solution uniformly over the carrier to obtain different 
concentrations of spray or dust. If the solution contains less than 
36-40 percent of the alkaloid, the quantities are increased accordingly. 
The present high cost of anahasine preparations makes their ex- 
tensive use prohibi-cive , and further vrork should "be carried out to 
determine the minimum effective dosages. Tables are given showing the 
amount of spray or dust necessarj'- to treat a given area of orchard, 
vineyard, or cultivated field at a tenperat^ore of 15-20° C [59-68° ?.] 
The toxicity of ana"basine increases at higher temperatures, ejnd this 
permits of a decrease in dosage. 
1934 
Harman (41) in 1934 reported experiments ^rhich had been made during 
1933 in three apple orchards in vrestern uev York -'ith five cover sprays 
of various materir.ls against Carpocapsa pomonella (L.), which was so 
abundant that 100 percent of the fruit was infested when cover sprays 
were omitted. 
In a badly infssted orchard of the King variety the following re- 
sults were obtained: 
Treatment, materials Stings, TJorms, Total injiiry, 
used per 100 gallons percent percent percent 
Lead arsenate 3 pounds 60 13 73 
iMicotine-oil 29 14 43 
First cover, lead arsenate 
3 TDounds 
Remaining sprays, nicotine 
sulfate 1 pint, oil 3 quarts 
Anabasine-oil 19 50 69 
Tirst cover, lead arsenate 
3 pounds 
Remaining sprays, anabasine 
sulfate 1 pint, oil 3 quarts 
Check, no treatment 99 99 
Slcalov (l3l) in 1934 reported on the application of anabasine sulfate 
as an insecticide for tobacco plants in the U. S. S, R. A solution of 20 
grams of anabasine sulfate in 10 liters of water, when sprayed on tobacco 
plants, killed all Myzus pe rsicae (Sulz.) organisms in 48 hours; a solu- 
tion containing 10 grams of anabasine sulfate and 100 grams of green soap 
in 10 liters of water required only 24 hours. Lower concentrations of 
anabasine sulfate were insufficient in combating the insect. The appear- 
ance and the taste of the finished goods prepared from tobacco treated 
in the above manner were normal. 
