VAw: A. Ff. Goldfarb 
and form will appear to exist in such a case, but upon analysis will 
be found to be indirect rather than direct.” 
If the former views of Child and of Lillie and Morgan are correct 
we must suppose that the removal of the cephalic ganglia alone 
(Child—Morgan, L. V.) suffice to inhibit anterior regeneration in 
22 23 
Figs. 22 and 23. Planaria, Dendroceelum lacteum, indicating the different kinds of operations 
described in text. 
Leptoplana, while these ganglia together with the anterior third 
of the cords must be removed in Dendroccelum to bring about the 
same results, but in Planaria the nervous system is so diffuse that 
removal of the whole of the central nervous system cannot prevent 
regeneration. 
