OD - 
Insoct and Sta[.G- 
Hallophaga (cont.) 
Pliiloptoridao (cont.) 
LigGurus heterographus 
Ilitzsch (chicken head 
louse) 
Ditto 
Proparation 
Effectivonoss 
Rcf eronco 
Powdor in v/ator Effcotive 
(1:1280) 
Powdor and to- Effect ivo 
bacco d\;.st (1+4) 
as a dust 
Frittain (13) 
in 1924 
Gilner (44) 
in 1923 
Trie hod ectidao 
Bovicolu. bovis L. 
pov;der as a 
dust 
Eff cctivo 
¥g11s, Bishopp 
and LaakG (109 
in 1922 
Ditto 
Ditto 
Ditto 
Thysunoptora 
Thripidae 
Hcliothrips hacinor- 
rhoidalis Bouchc 
(groonhousG tiirips) 
Homoptora 
Aphiidao 
Aphids 
Aphids 
Aphids 
Aphids 
Povrdor + flour Effoctivc 
(1+1) as a dust 
Powdor + ilaF Effoctivo 
(1+1) as a dust 
Powder + tobacco Effoctivc 
(1+1) as a dust 
Com'l oxtracts 
(?) 
RccoTii.icndod 
Com'l extract Roccnmondcd 
(?) 
Powdor in water Effoctivc 
(1:4000) 
Krosh root sap Effective 
PoY/der as a 
dust 
loojr; kill 
Ditto 
Ditto 
Ditto 
I.'otcalf and 
Flint (58) 
in 1928 
Ditto 
Carlos (i?) 
in 1926 
Doli Proofsta,, 
(22) in 192S 
Do Omt^ and 
Vaiite (26) 
in 1924 
