1899] MULTINUCLEAR CELLS 439 
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EXPLANATION OF PLATES I. AND II. 
Figs. 1-8.—Parenchyma cells from leaf-sheaths of Zea Mays. Fig. 2 in longitudinal section ; 
the rest transverse. 
Figs. 9-13.—Cells from the growing point of the root of Zea Mays. Longitudinal section. 
Fig. 14.—Parenchyma cells from leaf-sheaths of Secale cereale. Transverse section. 
Fig. 15.—a. Parenchyma cell from leaf-sheath of Triticum vulgare. 
b. Parenchyma cells from stem of same. Transverse section. 
