Gr. H. F. Nuttall 
521 
Ref. 
No. 
and eyes of the personnel unless respirators are worn. Knaffl-Lenz 
reports that lice survive exposure to a 3 % ammonia atmosphere, 
whilst Busson states that it has no value in practice, lice recovering 
from short exposures. Swellengrebel describes how 25 % solution, 
heated with a Flligge lamp (burns alcohol), is vapourized into 
hermetically sealed chambers (Amsterdam Corporation waggons), 
clothing being exposed for 2§ hrs; it can also be atomized on 
clothing confined in metal receptacles; he recommends the method. 
Expts 114-118 with vapour are contradictory. Expts 240-242: 
lice and nits killed by vapour in 1-3 hrs. Expt 239: vapour of 
25 % sol. was resisted by lice for 10 hrs when confined near the body. 
See also No. 431. 
368. Anisol, for corporis. 
This was much praised in Germany at the beginning of the war. 
Nocht and Halberkann state it was found too expensive and that 
it did not kill lice in the dilute vapour concentration that was 
practically applicable. Wesenberg cites Chem. Zeitung, 1915, p. 378, 
as stating that lice recover from its effects after some hours and 
that it is not harmless to men; it was tried in the Austrian army, 
found ineffective and stopped. Busson reports that it did not 
protect him and a nurse against infestation. Bordas and Bruere 
found it of no value as compared to benzine. 
Expt 4: lice immersed in it for 2 hrs were killed. Expt 55: lice 
in contact with it survived 10 hrs.- Expts 120-130: with vapour 
are contradictory. Expt 253: lice resisted vapour near man’s body 
for 13 hrs. Expt 274: had no effect overnight when sprayed on a 
lousy man. 
369. Asafoetida, for corporis. 
Used and recommended in the Danish war (Prowazek). Scarcely 
an agreeable remedy. No recent evidence available as to its useful¬ 
ness. 
370. Benzine, for capitis and corporis. 
Compresses applied to the head for 15 minutes are used at the 
- Hopital Militaire Buff on (Renault); method recommended by 
Letulle and Bordas. Filippini states that its free application to the 
head followed by putting on an airtight covering produced head¬ 
ache, etc. in Italian soldiers who inhaled the vapour; its use was 
therefore discontinued. It Avas found less effective than petroleum 
and dangerous because of its inflammability. 
