Ref. 
No. 
128 
129 
130 
131 
132 
133 
134 
135 
136 
137 
138 
139 
139c 
140 
141 
142 
143 
144 
145 
146 
147 
148 
149 
150 
151 
152 
153 
154 
155 
156 
157 
158 
159 
160 
161 
162 
163 
164 
164, 
164i 
165 
166 
167 
168 
169 
170 
170, 
171 
172 
173 
174 
175 
176 
177 
G. H. F. Nutt all 
503 
Vapour or gas tested 
At °C. 
Stage 
tested 
n. = nits 
l.=lice 
Result 
4 = killed in ' = mins. 
± = some killed in "=secs. 
o = survived exposure of 
Authority. 
See key to 
refs, at end 
of table 
Anisol 
n. 
-)- 10 hrs or over 4/4 killed 
W. 
„ 16 drops in 1500 c.c. space 
— 
i. 
+ 12-24 hrs 
Wu. 
99 99 99 
saturated atmos. 
— 
n. 
O 12-24 hrs 
Benzine 
15“ 
n. 
O 5' 
N. 
— 
— 
n. 
O 3 hrs 
Zu. 2 
— 
— 
i. 
± IV, 8/36 survived 
B. & B. 
— 
— 
i. 
± IT, 1/6 
+ 15', 12/12 killed 
— 
— 
i. 
F. 
4 drops in 1500 c.c. space 
— 
i. 
4- 12-18 hrs 
Wu. 
,, 1 litre in 1 cbm. space 
— 
i. 
+ 24 hrs 
S. 
Benzol 
— 
— 
n. 
O 3 hrs 
Zu. 1 
Benzyl chloride 
1/20 c.c. per 2 L. space 
16° 
i. 
O 35', only immobilized 
L. 
99 99 
33“ 
i. 
± 25', 40 % survived 
Camphor 
— 
— 
i. 
O 1 hr 
J. 
99 
— 
— 
!. 
4- 6 hrs 
G. 
-- 
— 
i. 
O many hrs 
K. 1 
Camphorated alcohol 
— 
— 
i. 
± 2-18 hrs, 14/70 and 
14/86 survived 
S. & F. 
„ oil 6 drops in 1500 c.c. space 
— 
i. 
4- (?) 4 hrs 
Wu. 
— 
n. 
O 4 hrs 
Carbon bisulphide 
saturated atmos. 
15° 
n. 
O 3' 
N. 
5 % sol. 
— 
n. 
4- 60' 
Zu. 2 
10 % sol. 
— 
n. 
4- 30' 
n. & n. 
240 c.c. per 1 cbm. 
— 
n. 
-j- 2 hrs 
>' J* 
Chinosol 
— 
— 
i. 
4- 6' 
F. 
— 
— 
i. 
4- 20 hrs 
G. 
Cocculus (alcoh. estr.) 
— 
— 
i. 
O some days 
Zu 1 
Creolin. 8 % heated 
— 
40° 
n. 1. 
+ 10' 
M. 
„ 10 % in soap sol. — 
45° 
n. 1. 
-j- 15' (recommended in 
practice) 
5) 
Cresol, 3 % powder 
— 
— 
n. 
O 14 hrs 
Zu. 2 
— 
— 
n. 
O 12 hrs, 2 nits tested 
W. 
99 99 
— 
— 
n. 
4- 2days,3/3nitskilled(too 
few to make certain) 
99 
Ether 
saturated atmos. 
15“ 
n. 
O 5' 
N. 
„ aethilic 
— 
— 
i. 
4- 30' 
F. 
Formalin 
— 
— 
i. 
+ 42' 
— 
— 
n. 
O 15', 4 nits tested 
W. 
— 
— 
i. 
4- 6 hrs 
Wu. 
99 
n. 
O 6 hrs (Peacock, 1 .1918, 
states that formalin 
vapour has no effect 
on lice) 
99 
Formic acid 
2-1 vol. % 
— 
i. 
4- 25' 
K.-L. 
3-2 „ 
— 
i. 
4- 10' 
99 
Hydrocyanic acid gas 
1% 
— 
n. 1. 
4- 2 hrs 
T. 
2% 
— 
n, 1. 
-|- 1 hr 
K. & F. 
Illuminating gas 
— 
n. 
O “useless” 
Iodoform 
— 
incubator 
i. 
O survived many hrs 
K. 1 
99 
Lactic acid, 20 % sol. 
— 
— 
i. 
O „ for days 
K. 2 
— 
— 
i. 
O survived some days 
Zu. 1 
Lysol, 15 % sol. 
— 
— 
i. 
O JJ 99 99 
Methyl anisol 
1/20 c.c. per 2 L. space 
16“ 
i. 
± 45', 80 % survived 
L 
33“ 
i. 
± 12', 40 % „ 
99 
Naphthaline powder 
16° 
i. 
O 45', only immobilized 
99 
99 99 
— 
33° 
i. 
4- 30', 100 % immobil. 
and killed 
99 
— 
— 
i. 
O 1 hr 
J. 
— 
— 
i. 
O 3 hrs 
Zu. 2 
large amount 
— 
i. 
4- 12 hrs or more 
Wu. 
Naphthaline in alcohol 1/20 c.c. per 2 L. space 
16“ 
i. 
O 30', only immobilized 
L. 
>5 5) 99 
99 99 * 
33“ 
i. 
4- 30', 100 % immobil. 
and killed 
99 
