220 LIVERPOOL BIOLOGICAL SOCIETY. 
tubes beneath, connecting the cells of the branch with 
those of the parent stem (see fig. 3). 

Fig. 1. 
Cellaria fistulosa, natural size, 
showing the mode of branching. 

Cellaria fistulosa, magnified, showing 
the arrangement of the cells and the 
formation of lateral branches. 




\ " aN 
PNA! Ne YAN IN 
ye in Ales 
int ON. 
ass MYATT NN 
iowa 
Cellaria fistulosa, magnified, showing lateral branches further developed 
and separated from the stem by flexible joints. 
* IT am indebted to Mr, A. N. Tate, F.L.C., &c., editor of ‘‘Research,” for 
permission to use these wood-cuts, 

