Anatomy of Teratological Seedlings . III. 325 
above. It will be perceived that two of the lateral bundles of the lower 
whorl (a and b, Figs. 27, 28) have of necessity no part in the bundle fusions 
occurring at the second epicotyledonary node, and it is these which unite 
Figs. 23-27. The distribution of the vascular strands in the young epicotyl. Fig. 27 isTrom 
an older seedling than the rest. In Fig. 26 the laterals of the lower whorl have, with the exception 
of the upper one on the right, fused with the adjacent laterals of the upper and lower pairs re- 
spectively. Bundles from the lower whorl are indicated in outline, from the upper pair cross-hatched, 
from the lower pair dotted. The dotted lines in Fig. 27 indicate the bundles which first unite. These 
and all subsequent figures, except Fig. 28, are camera lucida drawings' reduced to scale. 
with the lateral bundles of that one of the basal pair which first enters the 
stem (Figs. 25, 27, 28). The laterals of the other member of the basal pair 
each unite with a half-bundle derived from the midrib of that leaf in the 
lower whorl standing vertically above it, this bifurcating to produce the 
