ENTOMOLOGY

S~OSANITARY ENTOMOLOGYsecticidal. Laundries are to be found in all American cities and havebeen installed in practically all American cantonments and are found inmany European centers. Portable steam laundries were used by theAmerican army, and in the future should always be a part of an army'sequipment. There is no resulting damage to the garments if carried outas described below, which is according to standard laundry practice. Inall ordinary cases, the following formula is sufficient for the treatmentof woolen goods: .1. Wash fifteen minutes at ISI° F. in heavy suds and light load.~. Rinse three times, thr.ee minutes each, at ISI° F.S. Extract.4. Run in drying tumbler fifteen minutes, at a minimum of 140 0 F.The goods should not be perfectly dry when removed.5. Iron.In case the garments are suspected of containing very resistent disease..germs, the regular washing formula may be preceded by one of thefollowing measures:a. In the washer, run a current of live steam fifteen minutes, revolvingcylinder every five minutes, and discharging water of condensationevery five minutes. Remove the garments and shake until almost dry.Then turn the hot water into the washer and when the proper temperatureis reached, put in the garments for the wash as describedabove.b. In the washer, submerge in water at 165 0 F. for twenty minuteswithout motion, except a few revolutions every five minutes. Removethe garments until the new water has been brought to ISI° F. and thenbegin the wash as described above.Flat work, khaki and cotton underwear are washed by formulaerequiring hotter water and are hence thoroughly disinfected and disinsected.~. Dry CleaningUniforms and overcoats may be preferably dry cleaned rather thanwashed because of the stain-removing value of the dry cleaning process(Hutchison and Pierce, 1919). In this process the garments are deloused,disinfected, cleansed, have stains removed, and are pressed. Drycleaning establishments exist in most large cities. Many of the armycantonments had them installed and some units went overseas with ourtroops.This process is not insecticidal in every step, but is essentially soin s. complete process. The gasoline wash, contrary to expectations, willnot kill all submerged eggs, even after 54 hours.