On THE THEORY OF GALVANOTROPISM 449 
(where the secretion occurs) in such experiments. The fact 
that the disintegration of Actinospherium and the secretion 
in Amblystoma both occur at the anode must also be thrown 
into the balance.’ 
It was an entirely unexpected discovery that in these ex- 
periments stimulation always occurs at the anodal side of 
the central nervous system. This is the only exception to 
Pfliger’s law which has, to my knowledge, been found in 
vertebrates thus far. 
1 Birukoff has called attention to the fact that cataphoretic effects of the 
current form the basis of the anodic disintegration of Actinosphewrium as well as 
of the secretion of the glands of Amblystoma. His idea is entirely within the 
limits of possibility. [1903] 
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