THE CONTROL OF HUMAN LICE 317 



let it dry with the carboHc in it. To remove the eggs, apply 25 per cent 

 acetic acid and use fine comb (Nuttall). 



3. Anoint liead with a mixture of equal parts of kerosene and olive 

 oil, wrap the head in a towel and sleep in it. Apply vinegar and remove 

 eggs with a fine comb, then wash out with warm water and soap. This 

 may be repeated for two or tliree nights if necessary. 



4. Hair oil and pomades, as used in certain classes and races, are 

 efficient. 



Control of Body Louse 



The body louse occasionally lays its eggs on the hairs of the body, 

 but most of the measures involving treatment of the body are aimed at 

 preventing attack. In handling tliis louse it must be borne in mind 

 that simultaneous with freeing the body there must be control of the 

 infection in the garments and living quarters. 



The bath is the first important step in control of the body louse. 



Bath Outfits. — Early in the war it became apparent that portable 

 bathing and disinsecting apparatus must be developed. In Russia, Brink 

 (1915) late in November, 1914, devised a portable traveling bath capable 

 of bathing a regiment of 4000 to 4500 men in l^/^ to 2 days. 



Many modifications of this have been devised but we may give in 

 general a composite of these, which may serve as the model. 



The outfit may consist of a wagon train with tents or portable huts, 

 or a train, or at halting stations may consist of permanent structures. 

 The portable wagon or tractor-drawn outfit can most nearly approach 

 the trenches and is considered the best by Brink. The equipment should 

 be capable of washing and cleaning the clothing and equipment of at least 

 100 men an hour and to discharge each man in about half an hour, thus 

 making it possible to wash an army unit in the course of a short 

 time. 



There is also supposed to be a distinct separation between unclean 

 and clean, and the cleaned men must not mix with the uncleaned. 



Disrobing. — In a bathing unit, the men come into the receiving tent, 

 car, or room, and undress, receiving numbered tags for identification of 

 their belongings. In the disrobing room each man places his clothing 

 in a bag, his accoutrements in another receptacle, personal belongings 

 which do not need fumigation in still another, all of these receptacles 

 bearing the number given to him. These articles may be treated in 

 various ways as described under the various headings. 



Bath. — The men proceed into the bathroom and receive either shower 

 or tub bath, and in some cases pass through several baths. In the Rus- 

 sian portable outfits the bath equipment consists of folding benches, zinc 

 covered tubs, wash basins, spoon measures for liquid soap, sacks for 



