PLATE X 
Fig. 3. Horse-drawn Thresh Steam Disinfector, furnace heated. Two wheeled type. The 
chamber measures 3 feet wide by 5 feet deep (35 J cubic feet). 
Fig. 4. Thresh Disinfector, fixed type, suitable for hospitals, etc. The chamber measures 
3 feet 6 inches across by 4 feet 6 inches in height, the depth ranging up to 8 feet. 
