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Fic. 1. Camera sketches of the changes in form of an X body as it moved through a diseased hair cell of 
the tobacco. Period of observation one and one-half hours. There was only one X body in the cell and 
in appearance it resembled the one shown in plate 1, figure 5. Magnification about 1,200. 
ASVASIC] OIVSOJ, HLIM GHLIaAAIY SINVId :NISLSATO*) 992 
