582 
Combating Lousiness 
BIBLIOGRAPHY OF PEDICULUS AND PHTHIRUS. 
Additional references to those published in Parasitology, 
x. 1, pp. 1—42, apart from those cited in the text. 
Bacot, A. (4. viii. 1917), A simple means of ascertaining if a sterilizing hut is 
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Bacot, A. and Lloyd, L. (27. IV. 1918), Destruction of nits of the clothes louse 
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Note (whilst in press): The authors describe experiments on corporis nits im¬ 
mersed in different strengths of insecticide solutions. (1) Lysol-soap in 
1-5-2 % solution killed 100% in 5'; (2) Cresol-soap in 2% solution killed 
97 % in 5', 100 % in 20', whilst 0-5 % solution killed 11 % in 5', 65 % in 
20' and 100% in 150'. These tests were made at 9-18° C., but at 0°C. 
the exposure should be slightly lengthened. As in bacterial disinfection, 
the presence of organic impurities may modify the potency of the solution. 
The experiments, in the main, confirm what is stated in my text, pp. 528, 
530, 575, q.y. Consult the original. 
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