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The corn earworm and cutworms are not satisfactorily controlled 
by either rut en one or pyrethrua, but must be combatod witn arsenical 
and fluorxne compounds. — Eeid (497 , p. 3). 
(namostra j ~giratnra braayfq— (L.), a cabbage noth 
In Scotland the larvae can bo controlled by dusting tne plants 
with nicotine, pyrethrum, or derri*.— Cameron (99). 
Sprays or dusts containing Perria or Lonohocarpusr were suggest- 
ed for control in England.— Walton (6&3) » 
A derris mixture (0.75 percent of rotenome) was applied success- 
fully in Holland against tko larvae af Manestra (probably M. brassicae ) 
on tomatoes*— van Poeteren (470 , p. 75). 
Papaipeaa purpurif«*oia (G. k R»), ooluabine borer 
Dusts of derris aixed with talc were effective if applied, during 
tne hatcning period, to cultivated aquilegia plants and soil around 
them.— Matthewman (404 ) • 
Plusia 8ignata (?•) 
In New Guinea the larvae on tobacco can be controlled with derris 
dust*— Froggatt (204) • 
Polia oleracea (L«), tomato moth 
Young larvae on tomatoes in England were killed by the addition 
of derris extract (0.002 percent of rotenone) to a 1-percent petroleum 
emulsion, and all except some mature larvae by a spray containing 
0.0045 percent of rotenone; but 0.007 percent was necessary to give a 
complete kill.— Read (495 ) . 
Prodenla erldanla (Cram.), the southern armyworm 
The ingestion of rotenone was followed by no changes in the epi- 
thelium or muscle fibres, but the ingestion of arsenicals was follow- 
ed by disintegration of the midgut epithelial cells and damage to the 
midgut muscle fibres. Silkworms died within 2 hours after ingesting 
minute quantities of rotenone, whereas southern armyworm s readily 
ingested 59 to 10 mg. in sandwiches without showing any ill effects.— 
Woke (699). 
Feeding rotenone, niootine, pyrethrum, and phenotftiarine in sand- 
wionee caused little or no onange in tne blood cells and no significant 
