DEGENERATION IN THE LARV.-E OF GONIONEMA. 



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substance of the main mass flowed out gradually until it had 

 accumulated as a spherical knob at its extremity. On the surface 

 of this knob the cnidocils protruded in all directions. A second 

 filamentous rod of tissue was projected from another portion of 

 the mass, and a similar flowing movement of the substance 

 resulted in another knob. This waving object then proceeded 



FIG. 7. 



to crawl slowly over the bottom, the basal portion only exhibit- 

 ing activity, and that the simplest. This form was frequently 

 present in the dishes, as many as half a dozen specimens, more 

 or less like Fig. 7, sometimes occurring within an area of not 

 more than four square millimeters. By the constriction of the 

 connecting rod at a point near the ball at its extremity, this latter 

 mass was detached from the rest of the object, and settling down 

 on the bottom began to move about in the characteristic way 

 The remaining stock of protoplasm, seen on the right in the 



