G. H. F. Nuttall 
499 
2. Under more natural conditions of experimental infestation. 
Kef. 
No. 
Insecticide tested 
Form of Experiment 
Result 
Authority 
93 
N.C.I. powder (see 
ref. 428, p. 537) 
Blanket sleeping-bag infested 
with 700 lice. Author slept 
therein after dusting 2J oz. of 
N.C.I. on his shirt, back and 
front, on riding breeches at fork 
and down knees. Socks replaced 
puttees on feet. Shirt opened 
and sleeves rolled back to el¬ 
bows. On entering bag, soon 
felt lice crawling on him. He 
was only bitten on wrists and 
ankles 
Next morning found 
155 dead lice in socks, 
30 dead lice below knees 
of breeches, 1 dead louse 
on thigh and none on 
shirt. Concluded that 
N.C.I. kills and deters 
Peacock, vii. 
1916, pp. 54, 
55, also MS. 
Report, W.O. 
i. 1918 
94 
Blue ointment and 
soft paraffin (equal 
parts) 
1. Smeared on tape worn about 
ankles, knees, waist, arms and 
neck 
No effect in 2 hrs 
Ditto 
2. Ca. 1 oz. smeared over whole 
body before retiring for the 
night 
35/300 lice, previously 
put on man, found alive 
next morning 
95 
Sulphur ... 
Ca. 3 oz. dusted all over gar¬ 
ments, especially seams, but not 
outside khaki. Experimenter 
infested himself with 300 lice 
Useless when acting 
only overnight. Was 
badly bitten and could 
not sleep during experi¬ 
ment lasting overnight. 
(Sulphur has no effect 
per se, see pp. 497,550) 
Peacock, MS. 
Report, W.O. 
i. 1918 
96 
Sulphur and soft 
paraffin 
2 oz. applied to skin from neck 
to ankles, at seams, etc. Ex¬ 
perimenter infested himself with 
100 lice overnight 
Insufficient . 
Ditto 
97 
Vermijelli 
2 oz. per man applied as above, 
overnight 
Fairly efficient 
Ditto 
98 
Crude tar oil and 
soft paraffin, 1 : 8 
Applied as ointment to body and 
seams of clothes. Experimenter 
slept in bag into which he had 
put 100 lice 
Efficient 
Ditto 
3. Upon naturally infested men. 
Kef. 
No. 
Insecticide tested 
Form of Experiment 
Result 
Authority 
99 
N.C.I. powder ... 
21 oz. per man, 6 infested men 
tested 
After 1 day 60 % of lice 
dead 
Ditto 
100 
>5 33 
2 oz. per man, 20 infested men 
tested. Dusted all over clothing 
inside uniform 
Lice ceased troubling 
for 3-5 days, then lar¬ 
vae hatched out 
Ditto 
101 
Cresol 2 % in soft 
paraffin and crude 
mineral oil, 2 : 1 
Applied as ointment to body 
and seams to 35 infested men 
Fairly efficient, appar¬ 
ently expelled lice 
Ditto 
102 
Cresol 2 % in 
crude mineral oil, 
water and soap 
(3:2:1) 
Applied as ointment as above to 
35 men 
Ditto . 
Ditto 
