56 
ROSS G. HARRISON 
fit into the wound so exactly. Besides this there seems to be a 
time factor involved in the reversal, which would indicate that 
the dorsoventral axis of the limb elements is slightly differenti- 
ated, though not irreversibly so. 
Figs. 93 to 95 Orthotopic transplantation; right limb to left side (hcl.ih'.). 
Exp. R. E. SO. Transplanted limb (TR) becomes a normal left. A^, normal 
right limb; 1 to 4, numbers of digits. 
Fig. 93 Dorsal view, six daj's after operation. Transplanted bud much 
smaller than normal. 
Fig. 94 Dorsal view, fourteen days after operation. 
Fig. 9.5 Ventral view, forty-two days after operation. 
