book be disinfected without dam- sides of the box can be raised by cranks to admit the aging it? Krauz recommends exposure to high-pres- cites the case of twenty clerks of the health depart- book racks. In the center of the oven is a vessel ment of Lansing, Mich., who became victims of tuber- sure… … Fig. 1.—Sliding the rack of books into the disinfecting oven. Fig. 8.—The beating machine, which frees the books from dust. THE DISINFECTION OF SCHOOL BOOKS.
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