ENTOMOLOGY

THE CONTROL OF HUMAN LICE 317let it dry with the carbolic in it. To remove the eggs, apply ~5 per centacetic acid and use fine comb (Nuttall).3. Anoint head with a mixture of equal parts of kerosene and oliveoil, wrap the head in a.towel and sleep in it. Apply vinegar and removeeggs with a fine comb, then wash out with warm water and soap. Thismay be repeated for two or three nights if necessary.4. Hair oil and pomades, as used in certain classes and races, areefficient.Control of Body LOU8eThe body louse occasionally lays its eggs on the hairs of the body,but most of the measures involving treatment of the body are aimed atpreventing attack. In handling this louse it must be borne in mindthat simultaneous with freeing the body there must be control of theinfection in the garments and living quarters.The bath is the first important step in control of the body louse.Bath Outfita.-Early in the war it became apparent that portablebathing and disinsecting apparatus must be developed. In Russia, Brink(1915) late in November, 1914, devised a portable traveling bath capableof bathing a regiment of 4000 to 4500 men in 1% to 2 days.Many modifications of this have been devised but we may give ingeneral 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 approachthe trenches and is considered the best by Brink. The equipment shouldbe capable of washing and cleaning the clothing and equipment of at least100 men an hour and to discharge each man in about half an hour, thusmaking it possible to wash an army unit in the course of a shorttime.There is also supposed to be a distinct separation between uncleanand clean, and the cleaned men must not mix with the uncleaned.Diarobing.-In a bathing unit, the men come into the receiving tent,car, or room, and undress, receiving numbered tags for identification oftheir belongings. In the disrobing room each man places his clothingin a bag, his accoutrements in another receptacle, personal belongingswhich do not need fumigation in still another, all of these receptaclesbearing the number given to him. These articles may be treated invarious ways as described under the various headings.Bath.-The men proceed into the bathroom and receive either showeror tub bath, and in some cases pass through several baths. In the Russianportable outfits the bath equipment consists of folding benches, zinccovered tubs, lVash basins, spoon measures for liquid soap, sacks for