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ZOOLOGY: G. H. PARKER 
toward the base of the tentacle, not toward its tip, and thus deliver 
impulses proximally rather than distally along the tentacle. 
From these various observations, it is concluded that the tentacles 
of sea-anemones, in contradistinction to such appendages as those of the 
arthropods and of the vertebrates, must be regarded as containing within 
themselves a complete neuromuscular mechanism by which their re- 
sponses can be carried out quite independently of the rest of the animal. 
These organs thus possess great autonomy and act in harmony and uni- 
son more because of simultaneous stimulation than of subordination 
to a common nervous centre. 
The full paper will be published in the Journal of Experimental Zoology. 
