PLATE 6 
Drawings made from fresh, unstained living tissues of wheat plants. 
1, 3, and 5.—Intracellular bodies in the tissues from the lower part of outer leaf 
sheaths. This material is from Harvest Queen wheat plants growing in rosette- 
infested soil under somewhat artificial conditions. The symptoms of rosette or leaf 
mottling had not yet developed. Note the elongated bodies and the granules in some 
of the vacuoles. These were all in motion. "Hie elongated bodies were especially 
active, showing an eellike movement. While these movements may be all of the 
Brownian type this is not the only possibility. 
2. -^Intracellular bodies in the guard cells of a leaf stoma. Material from a mottled 
leaf of a Kanred wheat plant. This variety is not susceptible to rosette, but is sus¬ 
ceptible to the mosaic like leaf mottling. H6st nuclei are marked N. The granules 
in the vacuoles of the intracellular bodies were in motion. 
4 and 6 —Intracellular bodies in the cells of a Harvest Queen wheat leaf showing 
the mosaiclike leaf mottling. The plant was affected by the rosette disease. AH Of 
the bodies in the vaculoes were in motion. Those in the central vacuoles assumed 
many shapes and occupied many different positions in the vacuoles. The move¬ 
ments of the long bodies were the same as in those shown in 1 and 3. Host nuclei 
marked N. 
