PLATE XOX LX. 
Camera lucida drawing of a pith-ray illustrated in Plate XXVIII, Big; <2; 
showing in detail the formation of the brown drops of the decomposition 
sroducts in the pith-ray cells, X 650. Occasional fine fungal hyphe may be 
een passing through the simple pits in the end walls of the pith-ray cells. 
