. Sanitary entomology; the entomology of disease, hygiene and sanitation. ngine so that steam could be released in the carsthrough perforated tubes. The steam has exit through cracks aboutthe doors, and reaches within the car a temperature about 105° C.(221° F.). The clothing is placed in bags or on shelves and may almostfill the car. Sterilization lasts one hour. b. Enclosed steam has been more commonly used and has likewisebeen the cause of most of the trouble. It may be applied either at normal THE CONTROL OF HUMAN LICE 323 or increased pressure, and in normal atmospheres or in vacuums (pla
. Sanitary entomology; the entomology of disease, hygiene and sanitation. ngine so that steam could be released in the carsthrough perforated tubes. The steam has exit through cracks aboutthe doors, and reaches within the car a temperature about 105° C.(221° F.). The clothing is placed in bags or on shelves and may almostfill the car. Sterilization lasts one hour. b. Enclosed steam has been more commonly used and has likewisebeen the cause of most of the trouble. It may be applied either at normal THE CONTROL OF HUMAN LICE 323 or increased pressure, and in normal atmospheres or in vacuums (plateXXIII). Fulton and Stamford recommend the following procedure: 1. Place woolen blankets or uniforms on hangers or loosely on traysin the sterilizer. 2. Introduce 60 pounds steam into the outer jacket to prevent sub-sequent condensation within the sterilizing chamber. 3. Create a 15 or 20-inch vacuum to facilitate penetration of theclothing by the steam. 4. Sterilize with steam. a. No pounds (atmospheric pressure) for one hour. b. Twelve pounds steam for 10 Plate XXIII.—Steam sterilizer in delousing station of U. S. Army Medical carriage is transferred along the rails in the foreground to rails leading intothe other room where another carriage is seen. (Hutchison.) 5. Produce 15 to 20-inch vacuum to facilitate drying. 6. Open the door of the sterilizer about 4* inches for 10 minutes toallow gradual cooling of the contents of the sterilizer. Steam under pressure will disintegrate woolens if the exposure is pro-longed. The bacterial sterilization requires preliminary vacuum andloose packing. Garments placed in bags are likely to have the wrinklesset, if water of condensation settles in them when the steam has not pene-trated at a sufficiently high temperature. If the cooling or dr3ang isvery rapid, wrinkles and shrinkage are quite likely to result. 324. SANITARY ENTOIVIOLOGY 4. Hot Air Delousing Hot air was used very extensively for delousing the armies,
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Keywords: ., bookcentury1900, bookdecade1920, booksubjectbenefic, bookyear1921
