146 A. W. BENNETT. 
the base of the first (fig. 3") ; this process being constantly 
repeated, the complete development exhibits a series of 
trichotomous branchings. It is usual, however, for only one 
of the lateral buds to be formed, either always on the same 
side or alternately on either side, and hence the plant acquires 
either a unilateral or zigzag appearance. Different forms are 
also produced according as the growth of the apical or the 
Fic. 4. 
lateral buds predominates, and by the lateral buds some- 
times springing at right angles and branching, occasion- 
ing a rosette-like structure (fig. 5). The size and form 
of the cells which compose the Mycoderma are subject 
to extreme variation, from very minute and spherical to 
very elongated and cylindrical; the buds generally be- 
coming completely separated after a time. ‘The contents of 
the cells also vary according to the composition of the 
nutrient fluid, being either hyaline and homogeneous, or very 
fluid and containing a few drops of oil or particles of pro- 
toplasm. ‘The separate cells possess the power of putting 
out new buds when placed in a fresh nutrient fluid. 
1 Tn both figs., 3 and 5, the wood engraver has not made the constriction 
at the points of attachment of the buds to the cells sufficiently marked. 
