60 - 
Insect and Stage 
Ancplura (cent.) 
Hacmatcpiniclao (cont.) 
Linomathus vituli L. 
Preparation 
Effectiveness 
Powder + NaF Effect ivo 
(1+1) as a dust 
Reference 
ITells, Bishopp, 
and Laake (109) 
in 1922 
Polyplax- spinulcsus 
Burm. (rat louse) 
Pov:dor + tobacco Effective 
dust (1+4) as a 
dust 
Gilner (44) 
in 1923 
Ditto 
Solencpotos capiliatus 
End. 
Powder + tobacco Effective 
dust + sulphur 
(7.5+ 67.5 + 25) 
as a dust 
Powder + flour Effective 
(1+1) as a dust 
Ditto 
IVells, Bishopp, 
and LacJce (109) 
in 1922 
