Anattasine dusts are prepared "by ?.at\irating the ^ell-dried, sifted 
lime rrith the required qu^ijitity of analDasine sulf.?.te, after which the 
noistened lime rras nixed in a mixirxg apparatus. After 15 to 20 minutes 
of nixing, the preparation is slightly dried in the sun r^Xid plp.ced in a 
tank protected from sun and moisture. Anahasine dust is preserved in 
large "bottles made of dark glass, ^hich are secxirely corked. If placed 
in paper contp.iners or in open "boxes, it loses its potency and, therefore, 
especially when the temperature is high, it is essential that the anahasine 
dust containers oe hermetically closed. The control sprayings were made 
v'ith a solution containing 0.3 percent of anahasine srilfate and 0.6 percent 
of lime. 
Eunyantezev (120) in 1937 reported that of a numoer of dust insecti- 
cides tested against the hemp flea-heetle, ?sylliodes attenur.ta Koch, on 
hemp in the Gor'kii Province of the U. S. S. H. , sodium fluosilicate was 
the most effective and rapid in action. Calcium r'jrsenate and anahasine 
dust were practically valueless. 
Ivanova and l^'e.-niritzkii (44) in 1937 reported tests of insecticides 
for quarantine treatment of living plants against scale insects "by suhmer- 
sion in toxic solutions. 
In experiments in Leningrad and Sulch-Jin on the control of coccids on 
nurserj'- stock (chiefly citrus";, infested "branches were immersed in water 
solutions of various insecticides. Those tested were pure ana'basine and 
nicotine; naphthenates of ana'ba.sine, nicotine, sodiiom, and potassium; sul- 
fates of ana"basine and nicotine; and soaps of ena'basine, nicotine, or 
sodium prepared with fatty acids of dolphin "bluVoer. i^one of the solu- 
tions caused complete mortality of the coccids, e\'en with concentrations 
of up to 0.5 percent of the alk-^.loid and an exposure of 60 to 90 minutes, 
at an average temperature of 20° C. [68° ?.]. Heating the solutions to 
45° C. [ll3° ?.] gave a mortalit;/- of up to 100 percent, "but equal results 
are o"btainahle with hot water at 50° C. [122^ ?.]. Since, ho-^ever, some 
plants do not survive expos\:;re to hot water at 50° C, ?jid as the alkaloid 
soaps proved to "be considerahly more effective than any of the other 
solutions tested, further investigations on their application at 40-45° C. 
[104-113° ?.] are recommended. 
The in-.;ecticidal properties of rjna'oasine and nicotine (as pure all^.- 
loids, naphfienates, sulfates, and dolphin oil soaps) were investigated 
on the imaginal stage of the following coccids: Chrysomphalus dictyospenni , 
Lepidosa-iohes gloverii , Pseudococcus gahani , ?. mrjitimus , and P. adonidum . 
i ot one of these prepojrations, even when tc^lzen in concentrations of 0.5 
percent of alkaloid content in the average temperat-are of 20° to 25° C, 
produced a lethal effect on P. adon id-urn , wnen this insect was submerged 
for 40 to 60 minutes in the preparation. The mortality of C. dictyospermi 
reached, however, with some of tne above preparations, nearly 100 percent. 
Hotmrn (119) in 1937 studied the effect of ana'basine on the gaseous 
exchange in incects. Larvae of ?le tonus riversii Scop., after "being 
capped into a 0.5-percent solution of ana"basine, or a l-percent solution 
of pnabasine sulfate (containing 40 percent ana'basine), discharged liquid 
from the mouth and aiius and "became prjralyzed in 2 to 15 minutes. Tlie 
