G. H. F. Ntjttall 
541 
Ref. 
No. 
434. Naphthol 6 % in 90 % alcohol, for pubis. 
Recommended for use on soldiers by Borne. 
435. Oil of anise, for corporis. 
5 % mixed with some indifferent oil, worn in sachets to which a 
few drops are added at 1-2 day intervals. Ivisskalt states anise may 
harm the respiratory system and cause loss of appetite. BertareMi 
advises it, mixed in the proportion 4 : 6 with 96 % alcohol as a 
preventive. Soldiers abhor the smell of it after a time (Meltzer). 
Expt 180: lice killed by its vapour in 24 hrs. Expt 267: lice 
survived 6 hrs exposure to its vapour on man’s body 1 . 
436. Oil of bergamot 30 % in spirit, for corporis. 
Recommended in the last Balkan war by military surgeons 
(Prowazek). Too expensive for practical purposes. Expts 181, 
268: throw doubt on its value 1 . 
437. Oil of birchtar (01. bettulae) 30 % in 96 % alcohol, for corporis. 
An old tried remedy in ointment for skin diseases. Steep clothes 
in the solution, air-dry for 15 minutes. Clothes feel slightly greasy 
and softer; they can be worn for weeks and keep off lice (Lobac- 
zewski). 
Expt 103: when applied to verminous men it caused lice to dis¬ 
appear from the body surface for 3 days. 
Oil of cloves 1 . 
438. Oil of eucalyptus, for corporis. 
Place drop-wise on clothing so that it is well distributed especially 
along the seams; apply ca. 1 c.c. per 125 square cm. Treat clothing 
again after 8 days to kill larvae that emerge from unkilled nits. 
It has no effect even on a child’s skin. When inhaled in quantity 
and for a long time, the vapour causes malaise, vomiting and 
diarrhoea. In Algeria it costs 3-6 francs a kilo, Australia supplies 
it at 2-50 francs. Caution: clothing is easily set on fire for some 
hours after treatment (Sergent and Foley). Eucalyptus oil is also 
recommended by the Kais. Gesundheitsamt. 
Expts on repellant action, see Expt 280 1 . 
439. Oil of fennel, for corporis. 
Smeared on the body after a change of clothing it was found of 
no use in practice (Pinkus); men object strongly to the odour after 
a time (Meltzer). Recommended as a preventive by Bertarelli. 
Expts 196-198: killed lice in 24 hrs by its vapour 1 . 
J See experiments with repellants, p. 4S8. 
35—2 
