The cell wall responds to the usual tests for cellu- 

 lose. After the death of the cell, the v/all swells greatly 

 in aqueous fluids. ^iThen so swollen, it shov/^s a plainly 

 lamellate structure (fig. 5), similar to that described for 

 Bornetia "by CORREITS ( ) . 



The cytoplasm forms a thin layer over the inner face 

 of the free portion of the cell wall, averaging 61^ in 

 thickness in the older cells. On the cross vra.ll it forms 

 a thickened circular pad; adjoining pads are in communi- 

 cation through the intercellular pores. The cytoplasmic 

 pad over the upper cross v/all averages in the laj:'ger cells 

 10 K*^ in thickness in the center, beseeming thinner toward 

 the edges. On the lov/er cross wall the pad is much thin- 

 ner, averaging about 3 M^ in thickness. The pads are about 

 evenly divided into a granula.r layer adjoining the sap- 



